History of Catalan
Catalan first developed from Vulgar Latin in the Pyrenees Mountains between France and Spain. It diverged from the other Romance languages in the 9th century.  At this point, Catalan spread quickly throughout the Iberian peninsula when the Catalan counts conquered Muslim territory.  By the 11th century, Catalan was present in several feudal documents.  Catalan was present throughout the Mediterranean by the 15th Century. This occurred while the city of Valencia flourished. 
In 1659, the Treaty of Pyrenees was signed, beginning a repression of the Catalan language. Louis XIV issued a decree that prohibited the usage of the Catalan language in Northern Catalonia. The repression continued during the French Revolution when the First French Republic prohibited the usage of Catalan in lingusistic education. The repression continued until recently, when the French government in 2007 promoted the usage of Catalan publicly and in education.
In Spain, the usage of Catalan was also prohibited. Under Francisco Franco, Catalan was prohibited in the government and in education. it was initially prohibited in mass media but allowed during the early 1950s. Publishing in Catalan continued.  Then, when Franco died and a constitutional monarchy was installed, the usage of Catalan was promoted. In Spain, Catalan is now used frequently and in many different television shows.
High Middle Ages
By the 9th century, the Catalan language had developed from Vulgar Latin on both sides of the eastern end of the Pyrenees mountains and valleys (counties of Rosselló, Empúries, Besalú, Cerdanya, Urgell, Pallars and Ribagorça), as well as the territories of the Roman province and later archdiocese of Tarraconensis to the south. From the 8th century onwards, the Catalan counts had extended their territory southwards and westwards, conquering territories of the Iberian Pensisula to the Muslims, and bringing their language with them.
This process was given its definitive impetus with the separation of the County of Barcelona from the Carolingian Empire in 988 AD. By the 9th century, the Christian rulers occupied the northern parts of present-day Catalonia, usually termed "Old Catalonia", and during the 11th and 12th centuries they expanded their domains to north of the Ebro river, a land known as "New Catalonia". During the 13th century, the Catalans expanded to the Land of Valencia and across to the Balearic Islands and Alghero in Sardinia.
According to historian Jaume Villanueva (1756–1824), the first attested Catalan sentence is thought to be found in an 8th-century manuscript from Ripoll that has been lost. It was a whimsical note in 10th or early 11th-century calligraphy: Magister m[eu]s no vol que em miras novel ("my master does not want you to watch me, newbie").
During the 11th century, several feudal documents (especially oaths and complaints), written in macaronic Latin, begin to show Catalan elements, with proper names or even sentences in Romance. Of historical and linguistic importance is the Memorial of Complaints of Ponç I (ca. 1050–1060), featuring whole sentences in Romance. By the end of the 11th century, documents written completely or for the most part in Catalan begin to appear, like the Complaints of Guitard Isarn, Lord of Caboet (ca. 1080–1095), or The Oath of peace and truce of count Pere Ramon (1098). Catalan shares many features with Gallo-Romance, from France and Northern Italy. Old Catalan diverged from Old Occitan between the 11th and 14th centuries.
Low Middle Ages
During the Low Middle Ages, Catalan lived a golden age, reaching a peak of maturity and cultural plenitude. Examples of this are the works of Majorcan polymath Ramon Llull (1232–1315), the Four Great Chronicles (13th-14th centuries), and the Valencian school of poetry culminating in Ausiàs March (1397–1459).
By the 15th century, the city of Valencia had become the center of social and cultural dynamism, and Catalan was present all over the Mediterranean world. The correlation between political splendor and linguistic consolidation was articulated through the Royal Chancery, which propagated a highly standardized language.
The outstanding novel of chivalry Tirant lo Blanc (1490), by Joanot Martorell, shows a transition from medieval to Renaissance values, something than can also be seen in the works of Bernat Metge and Andreu Febrer. During this period, Catalan was what Costa Carreras terms "one of the 'great languages' of medieval Europe". The flowering of the Renaissance was closely associated with the advent of the printing press, and significantly, the first book produced with movable type in the Iberian Peninsula was printed in Valencia in 1474: Trobes en llaors de la Verge maria ("Poems of praise of the Virgin Mary").
18th century to the present: France
After the Treaty of the Pyrenees, a royal decree by Louis XIV of France on 2 April 1700 prohibited the use of the Catalan language in present-day Northern Catalonia in all official documents under the threat of being invalidated.
Shortly after the French Revolution, the French First Republic prohibited official use of, and enacted discriminating policies against, the nonstandard languages of France (patois), such as Catalan, Breton, Occitan, Flemish, and Basque.
The deliberate process of eradicating non-French vernaculars in modern France and disparaging them as mere local and often strictly oral dialects was formalized with Abbé Grégoire's Report on the necessity and means to annihilate the patois and to universalize the use of the French language, which he presented on 4 June 1794 to the National Convention; thereafter, all languages other than French were officially banned in the administration and schools for the sake of linguistically uniting post-Bastille Day France.
To date, the French government continues its policy of recognizing only French as an official language in France. Nevertheless, on 10 December 2007, the General Council of the Pyrénées-Orientales officially recognized Catalan as one of the languages of the department in the Article 1 (a) of its Charte en faveur du Catalan and seek to further promote it in public life and education.
- Article 1: "The General Council of Pyrénées-Orientales officially recognizes, along with the French language, Catalan as a language of the department.
- (Le Conseil Général des Pyrénées-Orientales reconnaît officiellement, au côté de la langue française, le catalan comme langue du département)."
18th century to the present: Spain
After the Nueva Planta Decrees, administrative use of Catalan, and Catalan language education, were also banned in the territories of the Kingdom of Spain. It was not until the Renaixença that use of the Catalan language started to recover.
In Francoist Spain (1939–1975), the use of Spanish in place of Catalan was promoted, and public use of Catalan was initially repressed and discouraged by official propaganda campaigns. The use of Catalan in government-run institutions and in public events was banned. During later stages of the Francoist regime, certain folkloric or religious celebrations in Catalan were resumed and tolerated. Use of Catalan in the mass media was initially forbidden, but was permitted from the early 1950s  in the theatre. Publishing in Catalan continued throughout the dictatorship. There was no official prohibition of speaking Catalan in public or in commerce, but all advertising and signage had to be in Spanish alone, as did all written communication in business.
Following the death of Franco in 1975 and the restoration of democracy under a constitutional monarchy, the use of Catalan increased significantly because of new affirmative action and subsidy policies and the Catalan language is now used in politics, education and the media, including the newspapers Avui ("Today"), El Punt ("The Point"), Ara ("Now"), La Vanguardia and El Periódico de Catalunya (sharing content with El Periòdic d'Andorra, printed in Andorra); and the television channels of Televisió de Catalunya (TVC): TV3, the main channel, and Canal 33 (culture channel), Super3/3XL (cartoons channel) as well as a 24-hour news channel 3/24 and the sports channel Esport 3; in Valencia Canal Nou, 24/9 and Punt 2; in the Balearic islands IB3; in Catalonia there are also some private channels such as 8TV and Barça TV.
- Costa Carreras, pp. 6–7.
- Moran 2004, pp. 37–38.
- "L'interdiction de la langue catalane en Roussillon par Louis XIV" (PDF). "CRDP, Académie de Montpellier.
- Abbé Grégoire. "Report on the necessity and means to annihilate the patois and to universalize the use of the French language". languefrancaise.net.
- "Charte en faveur du Catalan". "La catalanitat a la Catalunya Nord". "Catalanité". cg66.fr. 28 July 2004. Retrieved 16 May 2010.[dead link]
- Marc Howard Ross, Cultural Contestation in Ethnic Conflict, page 139. Cambridge University Press, 2007.
- Veny 1997.
- The source book has reconstructed elided fragments and written out abbreviations in full, like et. Capitalization, the use of u-v, i-j, and c-ç have all been regularized. Accents apostrophes and diaeresis have been added according to the modern orthography. Used punctuation according to modern usage.
- Moran 1994, pp. 55–93.
- Memorial de greuges de Ponç I, comte d'Empúries, contra Jofre, Compte de Roselló
- Riquer 1964.
- Costa Carreras, Joan; Yates, Alan (2009). The Architect of Modern Catalan: Selected Writings/Pompeu Fabra (1868–1948). Instutut d'Estudis Catalans & Universitat Pompeu Fabra & Jonh Benjamins B.V. pp. 6–7. ISBN 978 90 272 3264 9.
- Moran, Josep (1994). Treballs de lingüística històrica catalana (in Catalan). Barcelona: Publicacions de l'Abadia de Monsterrat. pp. 55–93. ISBN 84-7826-568-6.
- Moran, Josep (2004). Estudis d'història de la llengua catalana (in Catalan). Barcelona: Publicacions de l'Abadia de Montserrat. pp. 37–38. ISBN 84-8415-672-9.
- Riquer, Martí de (1964). "Vol.1". Història de la Literatura Catalana (in Catalan). Barcelona: Ariel.
- Veny, Joan (1997). "greuges de Guitard isarn, Senyor de Caboet (1080-1095)". Homenatge a Arthur Terry. Barcelona: Publicacions de l'Abadia de Montserrat. pp. 9–18. ISBN 84-7826-894-4.