1270s

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1240s 1250s 1260s – 1270s – 1280s 1290s 1300s
Years:	1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
Categories:	Births – Deaths – Architecture Establishments – Disestablishments

The 1270s is the decade starting January 1, 1270, and ending December 31, 1279.

1270s: events by year

Contents: 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279

Africa

The Eighth Crusade

• Before August – King Louis IX of France launches the Eighth Crusade in an attempt to recapture the crusader states from the Mamluk sultan Baibars; the opening engagement is a siege of Tunis.
• August 25 – King Louis IX of France dies while besieging the city of Tunis, possibly due to poor quality drinking water.
• October 30 – The siege of Tunis and the Eighth Crusade end by an agreement between Charles I of Sicily (Louis IX's brother) and the sultan of Tunis.

Other events

• Yekuno Amlak overthrows the Ethiopian Zagwe dynasty, claims the throne and establishes the Solomonic dynasty.

Asia

• In Korea, the Sambyeolcho Rebellion begins against the Goryeo Dynasty, a puppet government of the Mongol Empire.
• The ancient city of Ashkelon is captured from the crusader states and utterly destroyed by the Mamluk sultan Baibars, who goes so far as to fill in its important harbor, leaving the site desolate and the city never to be rebuilt.
• The city of Tabriz, in present-day Iran, is made capital of the Mongol Ilkhanate Empire (approximate date).
• The independent state of Kutch is founded in present-day India.
• A census of the Chinese city of Hangzhou establishes that some 186,330 families reside within it, not including visitors and soldiers. (Historian Jacques Gernet argues that this means a population of over 1 million inhabitants, making Hangzhou the most populous city in the world.)

Europe

• December – Crucial aspects of the philosophy of Averroism (itself based on Aristotle's works) are banned by the Roman Catholic church in a condemnation enacted by papal authority at the University of Paris.
• The Summa Theologica, a work by Thomas Aquinas that is considered within the Roman Catholic Church to be the paramount expression of its theology, is completed (year uncertain).
• Witelo translates Alhazen's 200-year-old treatise on optics, Kitab al-Manazir, from Arabic into Latin, bringing the work to European academic circles for the first time.
• The Sanskrit fables known as the Panchatantra, dating from as early as 200 BCE, are translated into Latin from a Hebrew version by John of Capua.
• Construction of the Old New Synagogue in Prague is completed.
• The cathedral on the Rock of Cashel in Ireland is completed.

1272

• Mamluk sultan Baibars of Egypt invades the weakening kingdom of Makuria to the south.
• Charles I of Anjou, King of Naples, occupies Durrës in Albania and establishes an Albanian kingdom.
• Count Floris V of Holland makes an unsuccessful attack on Frisia in an attempt to recover the body of his father, Count William II.
• November 21 – Edward I becomes King of England.
• King Alphonso III of Portugal eliminates the last Moorish community in Portugal at Faro.
• The Worshipful Company of Cordwainers receives the right to regulate the leather trade in London, England.
• In astronomy, the recording of the Alfonsine tables is completed.
• The first recorded reference is made to the game of cricket.

By place

Europe

• September 29 – Rudolph I of Germany is elected King of Germany over rival candidate King Otakar II of Bohemia, ending the Interregnum; Otakar refuses to acknowledge Rudolph as the new king, leading to the outbreak of war in 1276. Rudolph is the first of many Habsburgs to hold the throne.
• December 6 – Thomas Aquinas quits his writing of Summa Theologica — a master work of Catholic theology — leaving it unfinished after having a mystical experience during Mass.
• King Otakar II of Bohemia captures Bratislava from Hungary.
• The Congregatio Regni tocius Sclavonie Generalis with its decisions (statuta et constitutiones), is the oldest surviving document written by the Croatian parliament.

The Middle East

• December – Followers of the recently deceased Jalal al-Din Muhammad Rumi establish the Sufi order of the Whirling Dervishes in the city of Konya (in present-day Turkey).
• The "Holy Redeemer" khachkar, believed to be one of the finest examples of the art form, is carved in Haghpat, Armenia, by Vahram.
• The Constantinople suburb of Beyoğlu (then known as Pera) is given to the Republic of Genoa by the Byzantine Emperor Michael VIII Palaeologus, in return for Genoa's support of the Empire after the Fourth Crusade and the sacking of Constantinople.

Asia

• January 31 – The 6-year-long battle of Xiangyang ends as the commander of the Song Dynasty's forces surrender to Kublai Khan's Yuan Dynasty. The battle is the first in which firearms are used in combat.
• In Korea, the Sambyeolcho Rebellion against the Goryeo Dynasty (a puppet government of the Yuan Dynasty) ends as rebel forces are defeated by combined Yuan and Goryeo forces.

By area

Africa

• The Marinid amir, Abu Yusuf Yaqub, enters peacefully into Ceuta putting an end to some forty years of independence of the city.

Asia

• November 20 – Kublai Khan's Yuan Dynasty attempts the first of several invasions of Japan (30,000 soldiers and support personnel sails from Korea); after the Mongols capture outlying islands, they are repulsed on the main island at the Battle of Bun'ei by amassed Japanese warriors and a strong storm which batters their forces and fleet. Credit for the storm — called a kamikaze, or divine wind — is given by the Japanese to the god Raiden.
• Nichiren, founder of Nichiren Buddhism, enters a voluntary exile on Mount Minobu.

Europe

• May 7 – The Second Council of Lyons, held by the leadership of the Roman Catholic Church convenes to consider the liberation of the Holy Land via Crusades and address the East-West Schism with the Byzantine church. The Council eventually approves a tithe to support efforts to liberate the Holy Land from Muslims, and reaches apparent resolution of the schism which ultimately proves unsuccessful.
• November – The diet at Nuremberg orders that all crown estates seized since the death of Frederick II, Holy Roman Emperor be restored to Rudolph I of Germany; almost all European rulers agree, with the notable exception of King Otakar II of Bohemia, who had benefited greatly by conquering or otherwise coming into possession of many of those lands.
• Pope Gregory X decrees that conclaves (meetings during which the electors have no contact with the outside) should be used for papal elections, reforming the electoral process which had taken over 3 years to elect him.
• Joseph ben Abraham Gikatilla writes Ginnat Egoz (Garden of Nuts).

England

• August 2
  • King Edward I of England finally returns from the Ninth Crusade to England to be crowned king, 2 years after his father King Henry III's death.
  • His interim chancellor and effective regent, Walter de Merton retires from royal service to make the final revisions to his statutes for the foundation of Merton College, Oxford and take up the post of Bishop of Rochester.
  • One of Edward's first acts is to enforce a decree requiring all English Jews to wear yellow badges.
• The first main survey of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is begun; it lasts until 1275.

Italy

• Bonvesin de la Riva writes the didactic-allegoric poemet Libro de le tre scritture (Negra, Rubra, Aurea), the first text in ancient Western Lombard language (still similar to other Gallo-Italian languages), and one of the first great literary works in Italy. It tells about Hell, Christ's Passion and Paradise; this plot suggests Dante in his Comedia.

By place

Africa

• The troops of the Marinid dynasty takes the city of Algiers, at that time independent.

Asia

• March – The 200,000 multiethnic troops of the Mongol-led Yuan Dynasty, headed by the Turkish commander Bayan, face a Chinese Song Dynasty army of 130,000 led by the Song Chancellor Jia Sidao. The result is a decisive victory for the Yuan Dynasty, and soon after the much-vilified Jia Sidao is stripped of rank and title, and killed by one of his own guards as he is sent to exile in Fujian by the Song court.
• March 4 – Chinese astronomers observe a total eclipse of the Sun in China.
• The invading forces of the Yuan Dynasty capture the Song Dynasty city of Suzhou.
• Marco Polo purportedly visits Xanadu, Kublai Khan's summer capital of the Yuan Dynasty.
• The city of Kunming is made capital of the Yunnan province of the Mongol Yuan Dynasty.
• Nestorian monk Rabban Bar Sauma begins his pilgrimage from China towards Jerusalem.
• The Japanese era Bun'ei ends, and the Kenji era begins.

Europe

• April 22 – The first Statute of Westminster is passed by the English Parliament, establishing a series of laws in its 51 clauses, including equal treatment of rich and poor, free and fair elections, and definition of bailable and non-bailable offenses.
• June 14 – King Valdemar I of Sweden is defeated by his brother Magnus in the Battle of Hova, after which Magnus deposes him.
• July 22 – Magnus is elected new king of Sweden.
• October 8 – Battle of Ronaldsway: Scottish forces defeat the Manx of the Isle of Man in a decisive battle, firmly establishing Scottish rule of the island.
• Eleanor de Montfort is captured by pirates in the employ of Edward I of England to prevent her marriage to Llywelyn the Last, prince of Wales; she is used as a bargaining chip over the coming years in Edward's attempts to subjugate Llywelyn and Wales.
• October 27 – Floris V count of holland gave the city of Amsterdam independence of taxes.
• The Mongol Golden Horde raids Lithuania for the third time.
• Around Ciney, in present day Wallonia, start of the war of the cow (end in 1278).
• The first main survey of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is finished; it began in 1274.

By topic

Arts

• Jean de Meun completes the French allegorical work of fiction, Roman de la Rose, with a second section; the first section was written by Guillaume de Lorris in 1230.

Markets

• In Ghent, first recorded instance of emission of life annuities by a town in the Low Countries, this event confirms a trend of consolidation of local public debt in north-western Europe initiated in 1218 by Rheims.

Technology

• The verge escapement, a simple type of escapement used in clocks, is invented (exact year unknown).

Religion

• Ramon Llull establishes a school in Majorca to teach Arabic to preachers in an attempt to aid proselytizing to Moors. He also discovers diethyl ether.
• The era of the tosafot (medieval commentators on the Talmud) ends (began 1100).

By area

Africa

• Mamluk sultan Baibars conquers Al-Maris, previously part of Makuria, and annexes it into Egypt.

Americas

• A severe 23-year drought begins to affect the Grand Canyon area, eventually forcing the agriculture-dependent Anasazi culture to migrate out of the region.

Asia

• February – The court of the Southern Song Dynasty of China and hundreds of thousands of its citizens flee from Hangzhou to Fujian and then Guangdong in an effort to escape an invasion by Kublai Khan's Yuan Dynasty.
• June 14 – Remnants of the Song Chinese court in Fuzhou province conduct the coronation ceremony for the Prince Zhao Shi to become Emperor Duanzong of Song.

Europe

• March 9 – Augsburg becomes an Imperial Free City. Ravensburg also does in the same year.
• June – King Rudolph I of Germany declares war on King Otakar II of Bohemia, a political rival; by November, Otakar II is forced to cede four important territories as demanded by the diet of Nuremberg in 1274.
• Stefan Dragutin of Serbia becomes King of Serbia.
• Mudejar rebellion in Valencia (put down in 1278).

By topic

Markets

• Henry of Ghent becomes the last major theologian to openly consider annuities as usurious contract. The end of the debate allows for the expansion of the budding practice of renten emission to become a staple of public finance in north-western Europe.

Religion

• January 21 – Pope Innocent V succeeds Pope Gregory X as the 185th pope.
• July 11 – Pope Adrian V (also referred to as Hadrian) succeeds Pope Innocent V as the 186th pope.
• September 13 – Pope John XXI succeeds Pope Adrian V as the 187th pope, becoming the fourth man this calendar year to hold the office of pope.
• The foundation stone of the Minoritenkirche in Vienna is laid by King Otakar II of Bohemia.

1277

• Battle of Ngasaunggyan: Burma's Pagan Empire begins to disintegrate after being defeated by Kublai Khan at Yunnan near the Chinese border.
• Some 50,000 leaders and citizens of the Southern Song Dynasty of China become the first recorded inhabitants of Macau, as they seek refuge from the invading armies of the Yuan Dynasty. They also stay for a short period in Kowloon. Some hundred years later the place where they stayed becomes Sung Wong Toi.
• April 15 – Battle of Elbistan: Mamluk sultan Baibars invades the Seljuk Sultanate of Rûm and defeats a Mongol army.
• Llywelyn ap Gruffyd is subdued by King Edward I of England in the First Welsh War.
• St George's cross is first used as the flag of England.
• A number of philosophical doctrines such as Averroism are banned from Paris at a condemnation at the University of Paris.
• In Japan, a 20 kilometer stone wall defending the coast of Hakata Bay in Fukuoka is completed; it is built in response to the attempted invasion by the Yuan Dynasty in 1274.
• November 25 – Pope Nicholas III succeeds Pope John XXI as the 188th pope.

By area

Asia

• May 8 – Emperor Duanzong of Song China dies of illness and is succeeded by his brother Zhao Bing, who becomes Emperor Huaizong of Song. Meanwhile, armed forces under the control of Mongol leader Kublai Khan draw closer to the remnants of the Song imperial court. A year later at the Battle of Yamen the Song Dynasty will cease to exist, becoming incorporated into the Yuan Dynasty of China.
• The Japanese era Kenji ends, and the Koan era begins.

Europe

• August 26 – Battle of Marchfield: Kings Rudolph I of Germany and Ladislaus IV of Hungary defeat King Otakar II of Bohemia in a match of over 80,000 men and the largest battle of knights in the Middle Ages. The battle ends a power struggle between Rudolph and Otakar over the fate of central Europe, and Rudolph's Habsburg family will continue to rule Austria and other captured territories until the end of World War I in 1918.
• September 29 – Peter III of Aragon takes the Muslim stronghold of Montesa putting an end to two years of Mudejar rebellion. The defeated Muslims are expelled from the realm and go into exile.
• The independence, boundaries, and political structure of Andorra are agreed to by the catalan Bishop of Urgell and the Count of Foix.
• End of the so-called War of the Cow in what will become Wallonia (it had begun in 1275).

By topic

Arts and culture

• The earliest known written copy of the Avesta, a collection of ancient sacred Persian Zoroastrian texts previously passed down orally, is produced.

Markets

• Giles of Lessines writes his De usuris. He estimates that some credit contracts need not to be usurious as "future things are not estimated to be of such value as those collected in the instant". The prevalence of this view in the usury debate allows for the development of the financial industry in Catholic Europe.

Religion

• An edict by Pope Nicholas III requires all Jews to attend conversion sermons.

By place

Africa

• Abu Ishaq, uncle of the Hafsid khalif, sides with the Almohad rebels of Bejaia and takes Tunis.

Asia

• March 19 – Battle of Yamen: Kublai Khan's Yuan Dynasty defeats and ends the Song Dynasty, and becomes the emperor of all China.
• The Mongol Empire reaches its largest extent. However, by this time the empire has already partially fragmented.
• October 12 – The Dai-Gohonzon, the supreme object of veneration of Nichiren Shoshu Buddhism, is inscribed by Nichiren.
• A Yuan diplomatic party sent by Kublai Khan to Japan is killed by Japan's regent Hōjō Tokimune, leading to a second invasion attempt by the Mongols in 1281.
• The Chola Dynasty of South India falls under attacks by the Hoysala Empire and Pandyan Kingdom.
• Mamluk sultan Baraka Khan and emir Qalawun of Egypt invade Armenia; a revolt in Egypt while they are away forces Baraka to abdicate and allows Qalawun to become sultan.

Europe

• March 5 – Battle of Aizkraukle: Lithuanian forces led by Traidenis defeat the Teutonic Knights.
• The first of the Statutes of Mortmain are passed under King Edward I of England, which prevents land from passing into possession of the church.
• The second of two main surveys of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is begun; it lasts until 1280.
• Al-Razi's important medical writings are translated into Latin by Faraj ben Salim, some 350 years after Al-Razi's death.
• The Royal Mint of England moves into the Tower of London.
• The town of Haapsalu, Estonia is founded.

In Europe, power struggles within the Holy Roman Empire escalated into civil war as the 23-year interregnum without an emperor came to an end. Election of Rudolph I of Germany as King of Germany over Otakar II of Bohemia in 1273 led to open war in 1276 and Otakar's death in 1278 at the climactic Battle of Marchfeld. The resultant power structure in central Europe firmly established the Habsburg dynasty's rule, one that would continue Austria and other regional territories until the end of World War I in 1918. King Edward I of England returned from the Eighth Crusade to take the throne and was able to subjugate Wales by the end of the decade; Scotland quelled an uprising on the Isle of Man, in doing so confirming the concession of that territory made in 1266 by Norway in the Treaty of Perth. The Statute of Westminster established a series of individuals' rights in England. Both the Eighth Crusade and Ninth Crusade were brief efforts that quickly ended in failure, with King Louis IX of France dying during the former.

In Asia, the Mongols continued its expansion their territories. Kublai Khan moved his capital to present-day Beijing and renamed his empire the Yuan Dynasty, reflecting the new eastward focus of the empire. The Yuan Dynasty conquered the Southern Song Dynasty of China by the end of the decade. By this time the Mongols had subjugated most of continental Asia. The conquest of Southern Song witnessed the first use of firearms in war. The western Ilkhanate established a capital at Tabriz, in present-day Iran. The Mongols were able to quell the Sambyeolcho Rebellion in Korea and defeat the Nakhi and Pagan Empires, but failed an attempted invasion of Japan in 1274. Marco Polo reached Kublai Khan's summer court Shangdu by 1275, and stayed with the court for over 20 years.

The Mamluk sultanate of Egypt continued to expand its territory and dodge two crusades—the Eighth Crusade never reached its intended target, and the Ninth rapidly became a failure. The sultan Baibars was successful in expanding his territory as far north as the Sultanate of Rüm in Anatolia, east into Syria, and south into Makurian Nubia. After Baibars died in 1277, his successor Qalawun continued expansionist policies.

European culture witnessed the arrival of several important scientific works in translation from centuries-old Arabic sources, including Alhazen's work on optics and Al-Razi's medical works. The two major surveys of the English census known as the Hundred Rolls were conducted. Thomas Aquinas completed his seminal work Summa Theologica late in 1273, and died in 1274. Leadership of the Catholic Church attempted to address the East-West Schism of the church through the Second Council of Lyons, but despite apparent success the effort was ultimately doomed to fail. In Japan, Nichiren continued to lead a life that would come to be revered in Nichiren Buddhism.

In North America, a severe 23-year drought began in the Grand Canyon area, which would eventually force the local Anasazi people to emigrate from the region.

War and politics

Europe

War and peace

• 1271 – July 2 – Kings Otakar II of Bohemia and Stephen V of Hungary sign the first Peace of Pressburg, settling territorial claims following the failed invasion of Hungary by Otakar II.
• 1272 – Charles I of Anjou, King of Naples, occupies Durrës in Albania and establishes an Albanian kingdom.
• 1272 – King Alphonso III of Portugal eliminates the last Moorish community in Portugal at Faro.
• 1273 – September 29 – Rudolph I of Germany is elected King of Germany over rival candidate King Otakar II of Bohemia, ending the Interregnum; Otakar refuses to acknowledge Rudolph as the new king, leading to the outbreak of war in 1276. Rudolph is the first of many Habsburgs to hold the throne.
• 1273 – King Otakar II of Bohemia captures Bratislava from Hungary.
• 1274 – November – The diet at Nuremberg orders that all crown estates seized since the death of Frederick II, Holy Roman Emperor be restored to Rudolph I of Germany; almost all European rulers agree, with the notable exception of King Otakar II of Bohemia, who had benefited greatly by conquering or otherwise coming into possession of many of those lands.
• 1275 – Eleanor de Montfort is captured by pirates in the employ of Edward I of England to prevent her marriage to Llywelyn the Last, prince of Wales; she is used as a bargaining chip over the coming years in Edward's attempts to subjugate Llywelyn and Wales.
• 1275 – Scottish forces defeat the Manx of the Isle of Man in a decisive battle, firmly establishing Scottish rule of the island.
• 1276 – June – King Rudolph I of Germany declares war on King Otakar II of Bohemia, a political rival; by November, Otakar II is forced to cede four important territories as demanded by the diet of Nuremberg in 1274.
• 1276 – Four different men are pope over the course of the year, as Popes Gregory X, Innocent V, and Adrian V all die in quick succession.
• 1277 – Llywelyn ap Gruffyd is subdued by King Edward I of England in the First Welsh War.
• 1278 – August 26 – Kings Rudolph I of Germany and Ladislaus IV of Hungary defeat King Otakar II of Bohemia in the Battle of Marchfield, a match of over 80,000 men and the largest battle of knights in the Middle Ages. The battle ends a power struggle between Rudolph and Otakar over the fate of central Europe, and Rudolph's Habsburg family will continue to rule Austria and other captured territories until the end of World War I in 1918.

Political entities

• 1271 – The County of Toulouse passes to the French crown via the Treaty of Languedoc.
• 1272 – The city of Strasbourg becomes an Imperial Free City of the Holy Roman Empire.
• 1276 – March 9 – Augsburg becomes an Imperial Free City. Ravensburg also does in the same year.
• 1278 – The independence, boundaries, and political structure of Andorra are agreed to by the Spanish Bishop of Urgell and the French Count of Foix.

Political reform

• 1271 – September 1 – Pope Gregory X is elected pope by compromise between French and Italian cardinals, ending a three-year conclave, the longest ever.
• 1274 – Pope Gregory X decrees that conclaves (meetings during which the electors have no contact with the outside) should be used for papal elections, reforming the electoral process which had taken over three years to elect him.
• 1275 – April 22 – The first Statute of Westminster is passed by the English parliament, establishing a series of laws in its 51 clauses, including equal treatment of rich and poor, free and fair elections, and definition of bailable and non-bailable offenses.
• 1279 – The first of the Statutes of Mortmain are passed under king Edward I of England, which prevents land from passing into possession of the church.

Asia and Africa

Mongolian sphere of influence

• 1270 – In Korea, the Sambyeolcho Rebellion begins against the Goryeo Dynasty, a puppet government of Kublai Khan.
• 1270 – The city of Tabriz, in present-day Iran, is made capital of the Mongol Ilkhanate empire (approximate date).
• 1271 – Mongol Golden Horde raid against Bulgaria.
• 1271 – December 18 – Kublai Khan renames his empire "Yuan" (元, yuán), officially marking the start of the Yuan Dynasty of China.
• 1271 – The Nakhi kingdom of the northern Himalayan foothills is annexed by the Mongol Yuan Dynasty.
• 1273 – January 31 – The six-year long battle of Xiangyang ends as commander of the Song Dynasty's forces surrender to Kublai Khan. The battle is the first in which firearms are used in combat.
• 1273 – In Korea, the Sambyeolcho Rebellion against the Goryeo Dynasty (a puppet government of the Yuan Dynasty) ends as rebel forces are defeated by combined Yuan and Goryeo forces.
• 1274 – Mongol Golden Horde raid against Bulgaria.
• 1274 – November 20 – The Yuan Dynasty under Kublai Khan attempts the first of several invasions of Japan; after capturing outlying islands, the Yuan forces are repulsed on the main island at the Battle of Bun'ei by amassed Japanese warriors and a strong storm which batters their forces and fleet. Credit for the storm — called a kamikaze, or divine wind — is given by the Japanese to the god Raiden.
• 1275 – Invading forces of the Yuan Dynasty capture the Song city of Suzhou.
• 1275 – Marco Polo purportedly visits Shangdu, Kublai Khan's summer capital of the Yuan Dynasty.
• 1275 – The city of Kunming is made capital of the Yunnan province of the Yuan Dynasty.
• 1275 – Mongol Golden Horde raid against Lithuania.
• 1276 – February – The court of the Song Dynasty of China and hundreds of thousands of its citizens flee from Hangzhou to Fujian and then Guangdong in an effort to escape an invasion by the Yuan Dynasty.
• 1277 – Burma's Pagan empire begins to disintegrate after being defeated by Kublai Khan at the Battle of Ngasaunggyan, at Yunnan near the Chinese border.
• 1277 – Leaders and some 50,000 citizens of the Southern Song Dynasty of China become the first recorded inhabitants of Macau, as they seek refuge from the invading forces of the Yuan Dynasty.
• 1277 – In Japan, a 20 kilometer stone wall defending the coast of Hakata Bay in Fukuoka is completed; it is built in response to the attempted invasion by the Yuan Dynasty in 1274.
• 1279 – March 19 – Kublai Khan's Mongol Yuan Dynasty defeats the Song Dynasty in the Battle of Yamen. This completes the Mongol conquest of China and exterminates the Song Dynasty.
• 1279 – A diplomatic party of the Yuan Dynasty sent by Kublai Khan to Japan is killed by Japan's regent Hōjō Tokimune, leading to a second invasion attempt by the Mongols in 1281.

Mamluk Sultanate of Egypt sphere of influence

• 1270 – The Eighth Crusade:
  • 1270 – Before August – King Louis IX of France launches the Eighth Crusade in an attempt to recapture the crusader states from the Mamluk sultan Baibars; the opening engagement is a siege of Tunis.
  • 1270 – August 25 – King Louis IX of France dies while besieging the city of Tunis, possibly due to poor quality drinking water.
  • 1270 – October 30 – The siege of Tunis and the Eighth Crusade end by an agreement between Charles I of Sicily (Louis IX's brother) and the sultan of Tunis.
• 1270 – The ancient city of Ashkelon is captured from the crusader states and utterly destroyed by the Mamluk sultan Baibars, who goes so far as to fill in its important harbor, leaving the site desolate and the city never to be rebuilt.
• 1271 – April 8 – Mamluk sultan Baibars continues his territorial expansion, capturing the strategically important castle Krak des Chevaliers from the Knights Hospitaller in present-day Syria.
• 1271 – Baibars conducts an unsuccessful siege of the city of Tripoli, and also fails in an attempted naval invasion of Cyprus.
• 1271 – Edward I of England and Charles of Anjou arrive in Acre, starting the Ninth Crusade against Baibars; however, they are unable to capture any territory and a peace is quickly negotiated.
• 1272 – Baibars invades the weakening kingdom of Makuria to the south.
• 1276 – Baibars conquers Al-Maris, previously part of Makuria, and annexes it into Egypt.
• 1277 – Baibars invades Anatolia and captures the emirates which once composed the Sultanate of Rüm.
• 1277 – June 1 – Baibars dies in Syria; his son Baraka Khan takes his place to become sultan of Egypt and Syria.
• 1279 – Mamluk sultan Baraka Khan and emir Qalawun of Egypt invade Armenia; a revolt in Egypt while they are away forces Baraka to abdicate and allows Qalawun to become sultan.

South Asia

• 1270 – The independent state of Kutch is founded in present-day India.
• 1279 – The Chola Dynasty of South India falls under attacks by the Hoysala Empire and Pandyan kingdom.

Africa

• 1270 – Yekuno Amlak overthrows the Ethiopian Zagwe dynasty, claims the throne and establishes the Solomonic dynasty.

Americas

• 1276 – A severe 23-year drought begins to affect the Grand Canyon area, eventually forcing the agriculture-dependent Anasazi culture to migrate out of the region.

Culture

Science, literature, and industry

• 1270 – Witelo translates Alhazen's 200-year-old treatise on optics, Kitab al-Manazir, from Arabic into Latin, bringing the work to European academic circles for the first time.
• 1270 – The Sanskrit fables known as the Panchatantra, dating from as early as 200 BCE, are translated into Latin from a Hebrew version by John of Capua.
• 1271 – Marco Polo departs from Venice with his father and uncle on his famous journey to Kublai Khan's China.
• 1272 – The Worshipful Company of Cordwainers receives the right to regulate the leather trade in London, England.
• 1272 – In astronomy, the recording of the Alfonsine tables is completed.
• 1274 – The first main survey of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is begun; it lasts until 1275.
• 1275 – Jean de Meun completes the French allegorical work of fiction, Roman de la Rose, with a second section; the first section was written by Guillaume de Lorris in 1230.
• 1275 – Ramon Llull discovers diethyl ether.
• c. 1275 – The verge escapement, a simple type of escapement used in clocks, is invented.
• 1279 – The second of two main surveys of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is begun; it lasts until 1280.
• 1279 – Al-Razi's important medical writings are translated into Latin by Faraj ben Salim some 350 years after Al-Razi's death.
• 1279 – The Royal Mint of England moves into the Tower of London.

Art, architecture, and music

• 1270 – The cathedral on the Rock of Cashel in Ireland is completed.
• 1271 – The construction of Caerphilly Castle, the largest in Wales, is completed.
• 1271 – Construction of the Belaya Vezha in Belarus is begun.
• 1273 – The "Holy Redeemer" khachkar, believed to be one of the finest examples of the art form, is carved in Haghpat, Armenia, by Vahram.
• 1276 – The foundation stone of the Minoritenkirche in Vienna is laid by King Otakar II of Bohemia.

Religion

Christianity

• 1270 – December – Crucial aspects of the philosophy of Averroism (itself based on Aristotle's works) are banned by the Catholic church in a condemnation enacted by papal authority at the University of Paris. A second condemnation follows in 1277.
• 1273 – December 6 – Saint Thomas Aquinas quits his writing of Summa Theologica — a work considered within the Roman Catholic Church to be the paramount expression of its theology — leaving it unfinished after having a mystical experience during Mass.
• 1274 – May 7 – The Second Council of Lyons, held by the leadership of the Roman Catholic Church convenes to consider the conquest of the Holy Land via Crusades and address the East-West Schism with the Byzantine church. The Council eventually approves a tithe to support efforts to conquer the Holy Land from Muslims, and reaches apparent resolution of the schism which ultimately proves unsuccessful.
• 1275 – A purported witch is first burned to death by sentence of a judicial inquisitor in Toulouse, France.

Judaism

• 1270 – Construction of the Old New Synagogue in Prague is completed.
• 1274 – King Edward I of England enforces a decree requiring all English Jews to wear yellow badges.
• 1278 – An edict by Pope Nicholas III requires all Jews to attend conversion sermons.

Buddhism

• 1271 – September 12 – According to the followers of Nichiren Buddhism, the sect's founder, Nichiren, reaches a turning point known as hosshaku kempon as he discards his identity as a mortal priest and begins to reveal himself as a reincarnation of the Buddha.
• 1274 – Nichiren enters a voluntary exile on Mount Minobu.
• 1279 – October 12 – The Dai-Gohonzon, the supreme object of veneration of Nichiren Shoshu Buddhism, is inscribed by Nichiren.

Islam

• 1273 – December – Followers of the recently deceased Jalal al-Din Muhammad Rumi establish the Sufi order of the Whirling Dervishes in the city of Konya (in present-day Turkey).
• 1275 – Ramon Llull establishes a school in Majorca to teach Arabic to Catholic preachers in an attempt to aid proselytizing to Moors.

Zoroastrianism

• 1278 – The earliest known written copy of the Avesta, a collection of ancient sacred Persian Zoroastrian texts previously passed down orally, is produced.

Births

• 1270 – Jacob ben Asher, Spanish rabbi and important religious author
• c. 1270 – Zhu Shijie, famous Chinese mathematician (very approximate date)
• 1271 – Ghazan Khan, Mongol emperor of the Ilkhanate
• 1273 – November – Abulfeda, Arab historian and geographer (d. 1331)
• 1274 – July 11 – Robert the Bruce, King of Scotland (d. 1329)
• 1276 – William Wallace, Scottish patriot (approximate date; d. 1305)
• 1276 – Yesün Temür Khan, emperor of the Yuan Dynasty (d. 1328)
• 1278 – Nicola Pisano, Italian sculptor (b. c. 1220)

Deaths

• 1270 – August 25 – Louis IX of France, King of France, saint, and Crusader
• c. 1270 – Nahmanides, prominent Jewish rabbi and philosopher (approximate date)
• 1272 – Emperor Go-Saga, Emperor of Japan (b. 1220)
• 1273 – October – Baldwin II of Constantinople (b. 1207)
• 1274 – March 7 – Saint Thomas Aquinas, Catholic theologian (b. 1225)
• 1274 – Aedh mac Felim Ua Conchobair, King of Connacht
• 1276 – Ahmad al-Badawi, founder of the Sufi tariqah of Badawiyyah (b. 1199)
• 1277 – July 1 – Baibars, Mameluk sultan of Egypt (b. 1223)
• 1278 – August 26 – Ottokar II of Bohemia, King of Bohemia (b. c. 1230)