Principality of Catalonia

The Principality of Catalonia was a medieval and early modern state in the northeastern Iberian Peninsula. For most of its existence it was in personal union with the Kingdom of Aragon and other states, constituting together the composite monarchy known as the Crown of Aragon. It was bordered by the Kingdom of Aragon to the west, the Kingdom of Valencia to the south, the Kingdom of France to the north and by the Mediterranean Sea to the east. Its sovereign or prince had the title of Count of Barcelona. The term Principality of Catalonia was official until the 1830s, when the Spanish government implemented the centralized provincial division, but remained in popular and informal contexts. Today, the term Principat ("Principality") is used primarily to refer to the autonomous community of Catalonia in Spain, as distinct from the other Catalan Countries, and often including the region of Roussillon in Southern France.

The first reference to Catalonia and the Catalans appears in the Liber maiolichinus de gestis Pisanorum illustribus, a Pisan chronicle (written between 1117 and 1125) of the conquest of Majorca by a joint force of Northern Italians, Catalans, and Occitans. At the time, Catalonia did not yet exist as a political entity, though the use of this term seems to acknowledge Catalonia as a cultural or geographical entity. The counties that eventually made up the Principality of Catalonia were gradually unified under the rule of the count of Barcelona. In 1137, the County of Barcelona and the Kingdom of Aragon were unified under a single dynasty, creating what modern historians call the Crown of Aragon; however, Aragon and Catalonia retained their own political structure and legal systems, developing separate political communities along the next centuries. Under Alfons I the Troubador (1164–1196), Catalonia was regarded as a legal entity for the first time in 1173. Still, the term Principality of Catalonia was not used legally until the 14th century, when it was applied to the territories ruled by the Courts of Catalonia.

Its institutional system evolved over the centuries, establishing political bodies analogous to the ones of the other kingdoms of the Crown (such as the Courts, the Generalitat or the Consell de Cent) and legislation (constitutions, derived from the Usages of Barcelona) which largely limited the royal power and secured the political model of pactism (contractual system between the monarch and the Estates). Catalonia contributed to further develop the Crown trade and military, most significantly their navy. The Catalan language flourished and expanded as more territories were added to the Crown, including Valencia, the Balearic Islands, Sardinia, Sicily, Naples, and Athens, constituting a thalassocracy across the Mediterranean. The crisis of the 14th century, the end of the rule of House of Barcelona (1410) and a civil war (1462–1472) weakened the role of the Principality in Crown and international affairs.

In 1516, Charles V became monarch of both the crowns of Aragon and Castile, creating a personal union, the Monarchy of Spain. In 1492 the Spanish colonization of the Americas began, and political power began to shift away towards Castile. Tensions between Catalan institutions and the monarchy, alongside the peasants' revolts, provoked the Reapers' War (1640–1659), who saw the brief establishment of a Catalan Republic. By the Treaty of the Pyrenees (1659) the Roussillon was ceded to France. During the War of the Spanish Succession (1701–1714), the Crown of Aragon supported the Archduke Charles of Habsburg. After the surrender of Barcelona in 1714, King Philip V of Bourbon, inspired by the French model, imposed absolutism and a unifying administration across Spain, and enacted the Nueva Planta decrees for every realm of the Crown of Aragon, which suppressed Catalan, Aragonese, Valencian and Majorcan institutions and legal systems and merged them into the Crown of Castile as provinces, ending their status as separate states. However, the territories, including the Principality of Catalonia, remained as administrative units until the establishment of the Spanish provincial division of 1833, which divided Catalonia into four provinces.