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The Commercial Revolution consisted in the creation of a European economy based on trade, which began in the 11th century and lasted until it was succeeded by the Industrial Revolution in the mid-18th century. Beginning with the Crusades, Europeans rediscovered spices, silks, and other commodities rare in Europe. This development created a new desire for trade, and trade expanded in the second half of the Middle Ages. Newly forming European states, through voyages of discovery, were looking for alternative trade routes in the 15th and 16th centuries, which allowed the European powers to build vast, new international trade networks. Nations also sought new sources of wealth and practiced mercantilism and colonialism. The Commercial Revolution is marked by an increase in general commerce, and in the growth of financial services such as banking, insurance, and investing.
- 1 Origins of the Commercial Revolution
- 2 Colonialism and Mercantilism
- 3 Law
- 4 Effects
- 5 See also
- 6 Notes
- 7 References
Origins of the Commercial Revolution
The term itself was used by Karl Polanyi in his The Great Transformation: "Politically, the centralized state was a new creation called forth by the Commercial Revolution...". Later the economic historian Roberto Sabatino Lopez, used it to shift focus away from the English Industrial Revolution. In his best-known book, The Commercial Revolution of the Middle Ages (1971, with numerous reprints), Lopez argued that the key contribution of the medieval period to European history was the creation of a commercial economy between the 10th and the 14th century, centered at first in the Italo-Byzantine eastern Mediterranean, but eventually extending to the Italian city-states and over the rest of Europe. This kind of economy ran from approximately the 14th century through the 18th century. Walt Whitman Rostow placed the beginning "arbitrarily" in 1488, the year the first European sailed around the Cape of Good Hope. Most historians, including scholars such as Robert S. Lopez, Angeliki Laiou, Irving W. Raymond, and Peter Spufford indicate that there was a commercial revolution of the 11th-12th centuries, or that it began at this point, rather than later.
Maritime Republics and Communes
Italy first felt huge economic changes in Europe from the 11th to the 13th centuries. Typically there was:
- a rise in population―the population doubled in this period (the demographic explosion)
- an emergence of huge cities (Venice, Florence and Milan had over 100,000 inhabitants by the 13th century in addition to many others such as Genoa, Bologna and Verona, which had over 50,000 inhabitants)
- the rebuilding of the great cathedrals
- substantial migration from country to city (in Italy the rate of urbanization reached 20%, making it the most urbanized society in the world at that time)
- an agrarian revolution
- the development of commerce
In recent writing on the city states, American scholar Rodney Stark emphasizes that they married responsive government, Christianity and the birth of capitalism. He argues that Italy consisted of mostly independent towns, who prospered through commerce based on early capitalist principles and kept both direct Church control and imperial power at arm's length.
Cambridge University historian and political philosopher Quentin Skinner has pointed out how Otto of Freising, a German bishop who visited central Italy during the 12th century, commented that Italian towns had appeared to have exited from feudalism, so that their society was based on merchants and commerce. Even northern cities and states were also notable for their merchant republics, especially the Republic of Venice. Compared to absolutist monarchies or other more centrally controlled states, the Italian communes and commercial republics enjoyed relative political freedom conducive to academic and artistic advancement. Geographically, and because of trade, Italian cities such as Venice became international trading and banking hubs and intellectual crossroads.
Harvard historian Niall Ferguson points out that Florence and Venice, as well as several other Italian city-states, played a crucial innovative role in world financial developments, devising the main instruments and practices of banking and the emergence of new forms of social and economic organization.
It is estimated that the per capita income of northern Italy nearly tripled from the 11th century to the 15th century. This was a highly mobile, demographically expanding society, fueled by the rapidly expanding Renaissance commerce.
In the 14th century, just as the Italian Renaissance was beginning, Italy was the economic capital of Western Europe: the Italian States were the top manufacturers of finished woolen products. However, with the Bubonic Plague in 1348, the birth of the English woolen industry and general warfare, Italy temporarily lost its economic advantage. However, by the late 15th century Italy was again in control of trade along the Mediterranean Sea. It found a new niche in luxury items like ceramics, glassware, lace and silk as well as experiencing a temporary rebirth in the woolen industry.
During the 11th century in northern Italy a new political and social structure emerged: the city-state or commune. The civic culture which arose from this urbs was remarkable. In some places where communes arose (e.g. Britain and France), they were absorbed by the monarchical state as it emerged. They survived in northern and central Italy as in a handful of other regions throughout Europe to become independent and powerful city-states. In Italy the breakaway from their feudal overlords occurred in the late 12th century and 13th century, during the Investiture Controversy between the Pope and the Holy Roman Emperor: Milan led the Lombard cities against the Holy Roman Emperors and defeated them, gaining independence (battles of Legnano, 1176, and Parma, 1248; see Lombard League).
Similar town revolts led to the foundation of city-states throughout medieval Europe, such as in Russia (Novgorod Republic, 12th century), in Flanders (Battle of Golden Spurs, 14th century) in Switzerland (the towns of the Old Swiss Confederacy, 14th century), in Germany (the Hanseatic League, 14th–15th century), and in Prussia (Thirteen Years' War, 15th century).
Some Italian city-states became great military powers very early on. Venice and Genoa acquired vast naval empires in the Mediterranean and Black Seas, some of which threatened those of the growing Ottoman Empire. During the Fourth Crusade (1204), Venice conquered a quarter of the Byzantine Empire.
The Maritime Republics were one of the main products of this new civic and social culture based on commerce and exchange of knowledge with other areas of the world outside western Europe. The Republic of Ragusa and the Republic of Venice, for example, had important trade communications with the Muslim and Hindu world and this helped the initial development of the Italian Renaissance.
By the late 12th century, a new and remarkable society had emerged in Northern Italy; rich, mobile, expanding, with a mixed aristocracy and urban borghese (burgher) class, interested in urban institutions and republican government. But many of the new city-states also housed violent factions based on family, confraternity and brotherhood, who undermined their cohesion (for instance the Guelphs and Ghibellines).
By 1300, most of these republics had become princely states dominated by a Signore. The exceptions were Venice, Florence, Lucca, and a few others, which remained republics in the face of an increasingly monarchic Europe. In many cases by 1400 the Signori were able to found a stable dynasty over their dominated city (or group of regional cities), obtaining also a nobility title of sovereignty by their formal superior, for example in 1395 Gian Galeazzo Visconti bought for 100,000 gold florins the title of Duke of Milan from the emperor Wenceslaus.
In the fourteenth and fifteenth centuries, Milan, Venice, and Florence were able to conquer other city-states, creating regional states. The 1454 Peace of Lodi ended their struggle for hegemony in Italy, attaining a balance of power and creating the conditions for the artistic and intellectual changes produced by the Italian Renaissance.
Colonialism and Mercantilism
The deterioration of the climate that brought about the end of the medieval warm period (or medieval weather anomaly) caused an economic decline at the beginning of the 14th century (see Great Famine). However, demographic expansion continued until the arrival of the Black Death epidemic in 1347, when ca. 50% of the European population was killed by the plague. The economic effects of a labor shortage actually caused wages to rise, while agricultural yields were once again able to support a diminished population. By the beginning of the 15th century, the economic expansion associated with the Commercial Revolution in earlier centuries returned in full force, aided by improvements in navigation and cartography.
Geopolitical, monetary, and technological factors drove the Age of Discovery. During this period (1450-17th century), the European economic center shifted from the Islamic Mediterranean to Western Europe (Portugal, Spain, France, the Netherlands, and to some extent England). This shift was caused by the successful circumnavigation of Africa, which opened up sea-trade with the east: after Portugal's Vasco da Gama rounded the Cape of Good Hope and landed in Calicut, India in May 1498, a new path of eastern trade was possible, ending the monopoly of the Ottoman Turks and the Italian city-states. The wealth of the Indies was now open for the Europeans to explore; the Portuguese Empire was one of the early European empires to grow from spice trade. Following this, Portugal became the controlling state for trade between east and west, followed later by the Dutch city of Antwerp. Direct maritime trade between Europe and China started in the 16th century, after the Portuguese established the settlement of Goa, India in December 1510, and thereafter that of Macau in southern China in 1557. Since the English came late to the transatlantic trade, their commercial revolution was later as well.
In 1453, the Ottoman Turks took over Constantinople, which cut off (or significantly increased the cost of) overland trade routes between Europe and the Far East, so alternative routes had to be found. English laws were changed to benefit the navy, but had commercial implications in terms of farming. These laws also contributed to the demise of the Hanseatic League, which traded in northern Europe. Because of the Reconquista, the Spanish had a warrior culture ready to conquer still more people and places, so Spain was perfectly positioned to develop their vast overseas empire. Rivalry between the European powers produced intense competition for the creation of colonial empires, and fueled the rush to sail out of Europe.
The need for silver coinage also affected the desire for expanded exploration as silver and gold were spent for trade to the Middle and Far East. The Europeans had a constant deficit in that silver and gold coin only went one way: out of Europe, spent on the very type of trade that they were now cut off from by the Ottomans.
Another issue was that European mines were exhausted of silver ore and gold. What ore remained was too deep to recover, as water would fill the mine, and technology was not sufficiently advanced enough to successfully remove the water to get to the ore or gold.
A second argument is that trade during the youth of the Commercial Revolution blossomed not due to explorations for bullion (gold and silver coinings) but due to a new found faith in gold coinage. Italian city-states such as Genoa and Florence (where the first gold coins began to be minted in 1252) and kingdoms such as the Kingdom of Sicily routinely received gold through such trading partners as Tunisia and Senegal. A new, stable and universally accepted coinage that was both compatible with traditional European coinage systems and serviced the increased demand for currency to facilitate trade made it even more lucrative to carry out trade with the rest of the world.
From the 16th to 18th centuries, Europeans made remarkable maritime innovations. These innovations enabled them to expand overseas and set up colonies, most notably during the 16th and 17th centuries. They developed new sail arrangements for ships, skeleton-based shipbuilding, the Western “galea” (at the end of the 11th century), sophisticated navigational instruments, and detailed charts and maps. After Isaac Newton published the Principia, navigation was transformed, because sailors could predict the motion of the moon and other celestial objects using Newton's theories of motion. Starting in 1670, the entire world was measured using essentially modern latitude instruments. In 1676, the British Parliament declared that navigation was the greatest scientific problem of the age and in 1714 offered a substantial financial prize for the solution to finding longitude. This spurred the development of the marine chronometer, the lunar distance method and the invention of the octant after 1730. By the late 18th century, navigators replaced their prior instruments with octants and sextants.
Significant contributors to European exploration include Prince Henry the Navigator of Portugal, who was the first of the Europeans to venture out into the Atlantic Ocean, in 1420. Others are Bartolomeu Dias, who first rounded the Cape of Good Hope; Vasco da Gama, who sailed directly to India from Portugal; Ferdinand Magellan, the first to circumnavigate the Earth; Christopher Columbus, who significantly encountered the Americas; Jacques Cartier, who sailed for France, looking for the Northwest Passage; and others.
The economy of the Roman Empire had been based on money, but after the Empire's fall, money became scarce; power and wealth became strictly land based, and local fiefs were self-sufficient. Because trade was dangerous and expensive, there were not many traders, and not much trade. The scarcity of money did not help; however, the European economic system had begun to change in the 14th century, partially as a result of the Black Death, and the Crusades.
Banks, stock exchanges, and insurance became ways to manage the risk involved in the renewed trade. New laws came into being.[clarification needed] Travel became safer as nations developed. Economic theories[clarification needed] began to develop in light of all of the new trading activity. The increase in the availability of money led to the emergence of a new economic system, and new problems to go with it.[clarification needed] The Commercial Revolution is also marked by the formalization of pre-existing, informal methods of dealing with trade and commerce.
Spain legally amassed approximately 180 tons of gold and 8200 tons of silver through its endeavors in the New World, and another unknown amount through smuggling, spending this money to finance wars and the arts. The spent silver, suddenly being spread throughout a previously cash starved Europe, caused widespread inflation. The inflation was worsened by a growing population but a static production level, low employee salaries and a rising cost of living. This problem, combined with underpopulation (caused by the Black Death), affected the system of agriculture. The landholding aristocracy suffered under the inflation, since they depended on paying small, fixed wages to peasant tenants that were becoming able to demand higher wages. The aristocracy made failed attempts to counteract this situation by creating short-term leases of their lands to allow periodic revaluation of rent. The manorial system (manor system of lord and peasant tenant) eventually vanished, and the landholding aristocrats were forced to sell pieces of their land in order to maintain their style of living. Such sales attracted the rich bourgeois (from the French word referring to this dominant class, emerging with commerce), who wanted to buy land and thereby increase their social status. Former "common lands" were fenced by the landed bourgeois, a process known as "enclosure" which increased the efficiency of raising livestock (mainly sheep's wool for the textile industry). This "enclosure" forced the peasants out of rural areas and into the cities, resulting in urbanization and eventually the industrial revolution.
On the other hand, the increase in the availability of silver coin allowed for commerce to expand in numerous ways. Inflation was not all bad.
Various legal and religious developments in the late Middle Ages allowed for development of the modern banking system at the beginning of the 16th century. Interest was allowed to be charged, and profits generated from holding other people's money.
Banks in the Italian Peninsula had great difficulty operating at the end of the 14th century, for lack of silver and gold coin. Nevertheless, by the later 16th century, enough bullion was available that many more people could keep a small amount hoarded and used as capital.
In response to this extra available money, northern European banking interests came along; among them was the Fugger family. The Fuggers were originally mine owners, but soon became involved in banking, charging interest, and other financial activities. They dealt with everyone, from small-time individuals, to the highest nobility. Their banks even loaned to the emperors and kings, eventually going bankrupt when their clients defaulted. This family, and other individuals, used Italian methods which outpaced the Hanseatic League's ability to keep up with the changes occurring in northern Europe.
Antwerp had one of the first money exchanges in Europe, a Bourse, where people could change currency. After the Siege of Antwerp (1584-1585), the majority of business transactions were moved to Amsterdam. The Bank of Amsterdam, following the example of a private Stockholm corporation, began issuing paper money to lessen the difficulty of trade, replacing metal (coin and bullion) in exchanges. In 1609 the Amsterdamsche Wisselbank (Amsterdam Exchange Bank) was founded which made Amsterdam the financial center of the world until the Industrial Revolution. In a notable example of crossover between stock companies and banks, the Bank of England, which opened in 1694, was a joint-stock company.
Banking offices were usually located near centers of trade, and in the late 17th century, the largest centers for commerce were the ports of Amsterdam, London, and Hamburg. Individuals could participate in the lucrative East India trade by purchasing bills of credit from these banks, but the price they received for commodities was dependent on the ships returning (which often did not happen on time) and on the cargo they carried (which often was not according to plan). The commodities market was very volatile for this reason, and also because of the many wars that led to cargo seizures and loss of ships.
Trade in this period was a risky business: war, weather, and other uncertainties often kept merchants from making a profit, and frequently an entire cargo would disappear all together. To mitigate this risk, the wealthy got together to share the risk through stock: people would own shares of a venture, so that if there was a loss, it would not be an all consuming loss costing the individual investor everything in one transaction.
Other ways of dealing with the risk and expense associated with all of the new trade activity include insurance and joint stock companies which were created as formal institutions. People had been informally sharing risk for hundreds of years, but the formal ways they were now sharing risk was new.
Even though the ruling classes would not often directly assist in trade endeavors, and individuals were unequal to the task, rulers such as Henry VIII of England established a permanent Royal Navy, with the intention of reducing piracy, and protecting English shipping.
Joint stock companies and stock exchanges
Stock exchanges were developed as the volume of stock transactions increased. The London Royal Exchange established in 1565 first developed as a securities market, though by 1801 it had become a stock exchange.
Historian Fernand Braudel suggests that in Cairo in the 11th-century Muslim and Jewish merchants had already set up every form of trade association and had knowledge of every method of credit and payment, disproving the belief that these were invented later by Italians. In 12th century France the courratiers de change were concerned with managing and regulating the debts of agricultural communities on behalf of the banks. Because these men also traded with debts, they could be called the first brokers. In late 13th century Bruges commodity traders gathered inside the house of a man called Van der Beurse, and in 1309 they became the "Bruges Beurse", institutionalizing what had been, until then, an informal meeting. The idea quickly spread around Flanders and neighboring counties and "Beurzen" soon opened in Ghent and Amsterdam.
"In the middle of the 13th century Venetian bankers began to trade in government securities. In 1351 the Venetian government outlawed spreading rumors intended to lower the price of government funds." Bankers in Pisa, Verona, Genoa and Florence also began trading in government securities during the 14th century. This practice was only possible, because these independent city states were not ruled by a duke but a council of influential citizens. The Dutch later started joint stock companies, which let shareholders invest in business ventures and get a share of their profits - or losses. In 1602, the Dutch East India Company issued the first shares on the Amsterdam Stock Exchange. It was the first company to issue stocks and bonds.
The Amsterdam Stock Exchange (or Amsterdam Beurs) is also said to have been the first stock exchange to introduce continuous trade in the early 17th century. The Dutch "pioneered short selling, option trading, debt-equity swaps, merchant banking, unit trusts and other speculative instruments, much as we know them."
Insurance companies were another way to mitigate risk. Insurance in one form or another has been around as far back as there are records. What differed about insurance going into the 16th and 17th centuries was that these informal mechanisms became formalized.
Lloyd's of London came into being in 1688 in English coffee shops that catered to sailors, traders, and others involved in trade. Lloyd's coffeehouse published a newspaper, which gave news from various parts of the world, and helped the underwriters of the insurance at the coffeehouse to determine the risk. This innovation was one of many that allowed for the categorization of risk. Another innovation was the use of ship catalogs and classifications.
As the economy grew through the Commercial Revolution, so did attempts to understand and influence it. Economic theory as a separate subject of its own came into being as the stresses of the new global order brought about two opposing theories of how a nation accumulates wealth: mercantilistic and free-trade policies. Mercantilism inflamed the growing hostilities between the increasingly centralized European powers as the accumulation of precious metals by governments was seen as important to the prestige and power of a modern nation. This involvement in accumulating gold and silver (among other things) became important in the development of the nation-state. Governments' involvement in trade affected the nobility of western European nations, because increased wealth by non-nobles threatened the nobility's place in society.
Governments became involved in trade directly through the granting of royal trade monopolies. For example, Walter Raleigh had been granted a trade monopoly by Queen Elizabeth, for the export of broadcloth and wine. Ironically, competition between colonial powers led to their granting of trade monopolies to the East India Companies.
A triangular trade occurred in this period: between Africa, North America, and England; and it worked in the following way: Slaves came from Africa, and went to the Americas; raw materials came from the Americas and went to Europe; from there, finished goods came from Europe and were sold back to the Americas at a much higher price.
Laws began to change to deal with commerce, both internationally, and locally within individual countries.
In France, for example, the Ordinance of Marine of Louis XIV was published under the auspices of Colbert in 1691, and was the first complete code of maritime and commercial law; and "when we consider the originality and extent of the design and the ability with which it is executed, we shall not hesitate to admit that it deserves to be ranked among the noblest works that legislative genius and learning have ever accomplished." 
In England, the Navigation Acts were among the British effort to regulate trade.
The Commercial Revolution, coupled with other changes in the Early Modern Period, had dramatic effects on the globe. Christopher Columbus and the conquistadors, through their travels, were indirectly responsible for the massive depopulation of South America. They were directly responsible for destroying the civilizations of the Inca, Aztec, and Maya in their quest to build the Spanish Empire. Other Europeans similarly affected the peoples of North America as well.
An equally important consequence of the Commercial Revolution was the Columbian Exchange. Plants and animals moved throughout the world due to human movements. For example, Yellow fever, previously unknown in North and South America, was imported through water that ships took on in Africa. Cocoa (chocolate), coffee, maize, cassava, and potatoes moved from one hemisphere to the other.
For more than 2000 years, the Mediterranean Sea had been the focus of European trade with other parts of the world. After 1492, this focus shifted to the Atlantic Ocean by routes south around the Cape of Good Hope, and by trans-Atlantic trade.
Another important change was the increase in population. Better food and more wealth allowed for larger families. The migration of peoples from Europe to the Americas allowed for European populations to increase as well. Population growth provided the expanding labor force needed for industrialization.
Another important outcome of Europe's commercial revolution was a foundation of wealth needed for the industrial revolution. Economic prosperity financed new forms of cultural expression during this period.
- List of largest European cities in history
- Mississippi Company
- Putting-out system
- South Sea Company
- Treaty of Tordesillas
- Polanyi, Karl (1944/2001). The Great Transformation: The Political and Economic Origins of Our Time. Boston: Beacon Press. p. 69. ISBN 978-0-8070-5643-1. Check date values in:
- Robert Lopez (1976). The Commercial Revolution of the Middle Ages. [New York]: Cambridge University Press. pp. 56–147.
- Ejvind Damsgaard Hansen (2001). European Economic History. [Copenhagen]: Copenhagen Business School Press. p. 47. ISBN 87-630-0017-2.
- O'Connor, David Kevin (2004). The basics of economics. Westport, Conn.: Greenwood Press. p. 48. ISBN 978-0-313-32520-5.
- Rostow, Walt Whitman (1975). How it all began : origins of the modern economy. London: Methuen. p. 107. ISBN 978-0-416-55930-9.
- Spufford, Peter. Money and its Use in Medieval Europe. Cambridge University Press. p. 240. ISBN 978-0-521-37590-0.
- Lopez, Robert (1955). Medieval Trade in the Mediterranean World. Columbia University Press. pp. 9, 50, 69, passim. ISBN 978-0-231-12356-3.
- Kathryn Reyerson (1999). "Commerce and Communications" in David Abulafia ed., The New Cambridge Medieval History, vol. 5. [Cambridge, UK]: Cambridge University Press. pp. 50–1.
- Angeliki Laiou (1997). "Byzantium and the Commercial Revolution" in G. Arnaldi ed., Europa medievale e mondo bizantino. [Rome, Italy]: Istituto Storico per il Medioevo, Studi Storici 40. pp. 239–53.
- Stark, Rodney, The Victory of Reason, New York, Random House, 2005
- Skinner, Quentin, The Foundations of Modern Political Thought, vol I: The Renaissance; vol II: The Age of Reformation, Cambridge University Press, p. 69
- Martin, J. and Romano, D., Venice Reconsidered, Baltimore, Johns Hopkins University, 2000
- Ferguson, Niall, The Ascent of Money: The Financial History of the World. Penguin, 2008
- Gama, Vasco da. The Columbia Encyclopedia, Sixth Edition. Columbia University Press. Archived 2009-02-14 at the Wayback Machine.
- Fisk, John (1900). Old Virginia and Her Neighbours. Houton, Mifflin, and Company. p. 14.
- Rankin, Rebecca B., Cleveland Rodgers (1948). "Chapter 1". New York: the World's Capital City, Its Development and Contributions to Progress. Harper.
- Cunningham, William (1892). The Growth of English Industry and Commerce in Modern Times. University Press. p. 26.
- Weatherford, J. McIver (1988). Indian givers: how the Indians of the Americas transformed the world. New York: Fawcett Columbine. p. 231. ISBN 0-449-90496-2.
- Diamond, Jared M. (1997). Guns, germs, and steel: the fates of human societies. New York: W.W. Norton. ISBN 0-393-03891-2.
- Cowen, Richard. "Exploiting the Earth". Archived from the original on 2007-10-09. Retrieved 2007-10-17.
- Lopez, Robert S. (1956). "Back to Gold, 1252". The Economic History Review. 9 (2): 219–240. doi:10.2307/2591743.
- Marcus Rautman (2006). Daily life in the Byzantine Empire. Westport, Conn: Greenwood Press. p. 150. ISBN 0-313-32437-9.
- The Family Magazine. Redfield & Lindsay. 1838. p. 436.
- Haven, Kendall F. (2006). 100 Greatest Science Inventions of All Time. Littleton, Colo: Libraries Unlimited. p. 69. ISBN 1-59158-264-4.
- Pope, Joseph (1890). Jacques Cartier, his life and voyages. Printed by A.S. Woodburn. p. 49.
- Webster, Hutton (1919). Medieval and Modern History. Boston: D.C. Heath & Co.
- Lewis, Archibald (January 1988). Nomads and Crusaders: AD 1000-1368. Indiana University Press. ISBN 978-0-253-20652-7.
- Walton, Timothy R. (1994). The Spanish Treasure Fleets. Pineapple Press (FL). p. 85. ISBN 1-56164-049-2.
- Tracy, James D. (1994). Handbook of European History 1400-1600: Late Middle Ages, Renaissance, and Reformation. Boston: Brill Academic Publishers. p. 655. ISBN 90-04-09762-7.
- Cunningham, William (1892). The Growth of English Industry and Commerce in Modern Times. University Press. p. 15.
- Danbom, David B. (2006). Born in the Country: A History of Rural America (Revisiting Rural America). Baltimore: The Johns Hopkins University Press. p. 4. ISBN 0-8018-8459-4.
- Weatherford, J. McIver (1988). Indian givers: how the Indians of the Americas transformed the world. New York: Fawcett Columbine. p. 15. ISBN 0-449-90496-2.
- Spufford, Peter (1993). Money and its Use in Medieval Europe. Cambridge, UK: Cambridge University Press. p. 349. ISBN 0-521-37590-8.
- Cunningham, William (1892). The Growth of English Industry and Commerce in Modern Times. University Press. p. 14.
- Brechin, Gray A. (1999). Imperial San Francisco: urban power, earthly ruin. Berkeley: University of California Press. ISBN 0-520-22902-9.
- Cunningham, William (1892). The Growth of English Industry and Commerce in Modern Times. University Press. p. 24.
- Keyser, Henry (1850). The law relating to transactions on the stock exchange. Oxford [Oxfordshire]: Oxford University Press. p. 1.
- Day, Clive (1914). A History of Commerce. Longmans, Green, and Co. p. 144.
- Michie, R. C. (1999). The London Stock Exchange: a history. Oxford [Oxfordshire]: Oxford University Press. p. 34. ISBN 0-19-829508-1.
- Fisk, John (1900). Old Virginia and Her Neighbours. Houton, Mifflin, and Company. p. 182.
- Lindsay, William S. (1872). History of Merchant Shipping and ancient commerce. London: Sampson Low, Marston, Low, and Searle. p. 89.
- Shane Darrisaw, H. Common Sense Ain't Common: A guide for positioning yourself to take full advantage of your credit and financial opportunities!. AuthorHouse. p. 86. ISBN 1-4343-7559-5.
- Chambers, Clem. "Who needs stock exchanges?". Mondo Visione. Retrieved 25 October 2009.
- Sayle, Murray (5 April 2001). "LRB · Murray Sayle: Japan goes Dutch". London Review of Books XXIII.7. Retrieved 25 October 2009.
- Martin, Frederick (1876). The History of Lloyd's and of Marine Insurance in Great Britain. MacMillan and Company, London. pp. 65–80.
- "London Fire Brigade – History, key dates (Our history)". Archived from the original on 2008-06-18. Retrieved 2007-10-27.
- Smits, Jan (2006). Elgar Encyclopedia of Comparative Law (Elgar Original Reference). Edward Elgar Publishing. p. 315. ISBN 1-84542-013-6.
- Markham, Jerry W. (2001). A financial history of the United States. Armonk, N.Y.: M.E. Sharpe. p. 22. ISBN 0-7656-0730-1.
- Elliott, Charles Burke (1907). The law of insurance: a treatise on the law of insurance, including fire, life, accident, marine, casualty, title, credit and guarantee insurance in every form. Bobbs-Merrill. p. 3.
- Bergman, Leslie. "History of colonization in South America". Stellenbosch University, Stellenbosch, South Africa. Archived from the original on 24 May 2010. Retrieved 25 October 2009. Stellenbosch, South Africa's Department of Modern Foreign Languages's Historical Background article South America says: "Yellow fever was an uninvited "guest" brought to the Americas on the slave ships from West Africa. Yellow fever is caused by a virus spread by the bite of a species of mosquito native to West Africa, the aedes aegypti. This mosquito was accidentally carried across the Atlantic in water barrels on the slave ships. Yellow fever struck communities from New York to Rio de Janeiro, but aedes aegypti flourished in tropical zones. The mosquito, and with it yellow fever, spread rapidly throughout the Amazon River valley. The disease was so lethal to Europeans, who had little immunity to it, that mass settlement of the Amazon region was not possible until present times."
- Rostow, Walt Whitman (1975). How it all began: origins of the modern economy. London: Methuen. p. 225. ISBN 0-416-55930-1.
- Gibbins, Henry de Beltgens (1891). The History of Commerce in Europe. MacMillan and Company London New York.
- Lopez, Robert. The Commercial Revolution of the Middle Ages. pp. 56–147.
- Marshall, Michael (1999). "From Mercantilism to 'The Wealth of Nations'" (PDF). The World & I. 5 (Special Edition).
- "Money Management and Imperial Power" (PDF). p. 6. Archived from the original (PDF) on 2012-02-20. Retrieved 2007-10-12.