Kingdom of Aragon in the context of "Iberian Crusades"

Apulia (/əˈpuːliə/ ə-POO-lee-ə), also known by its Italian name Puglia (Italian: [ˈpuʎʎa]), is a region of Italy, located in the southern peninsular section of the country, bordering the Adriatic Sea to the east, the Strait of Otranto and Ionian Sea to the southeast and the Gulf of Taranto to the south. The region comprises 19,345 square kilometers (7,469 sq mi), and has 3,874,166 inhabitants as of 2025. It is bordered by the other Italian regions of Molise to the north, Campania to the west, and Basilicata to the southwest. The regional capital is Bari.

In ancient times, more precisely at the beginning of the first millennium BC, the region of Apulia was inhabited by the Iapygians, while during the 8th century BC its coastal areas were populated by ancient Greeks. Later, the region was conquered by the ancient Romans. It was then conquered by the Byzantines, followed by the Normans, the Aragonese and the Spanish. Subsequently, it became part of the Kingdom of the Two Sicilies, to then be annexed to the unified Kingdom of Italy after the Expedition of the Thousand.

Barcelona (/ˌbɑːrsəˈloʊnə/ BAR-sə-LOH-nə; Catalan: [bəɾsəˈlonə] ; Spanish: [baɾθeˈlona] ) is a city on the northeastern coast of Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second-most populous municipality of Spain. With a population of 1.7 million within city limits, its urban area extends to numerous neighbouring municipalities within the province of Barcelona and is home to around 5.7 million people, making it the fifth most populous urban area of the European Union after Paris, the Ruhr area, Madrid and Milan. It is one of the largest metropolises on the Mediterranean Sea, located on the coast between the mouths of the rivers Llobregat and Besòs, bounded to the west by the Serra de Collserola mountain range.

According to tradition, Barcelona was founded by either the Phoenicians or the Carthaginians, who had trading posts along the Catalonian coast. In the Middle Ages, Barcelona became the capital of the County of Barcelona. After joining with the Kingdom of Aragon to form the composite monarchy of the Crown of Aragon, Barcelona, which continued to be the capital of the Principality of Catalonia, became the most important city in the Crown of Aragon and its main economic and administrative centre, only to be overtaken by Valencia, wrested from Moorish control by the Catalans, shortly before the dynastic union between the Crown of Castile and the Crown of Aragon in 1516. Barcelona became the centre of Catalan separatism, briefly becoming part of France during the 17th century Reapers' War and again in 1812 until 1814 under Napoleon. Experiencing industrialization and several workers movements during the 19th and early 20th century, it became the capital of autonomous Catalonia in 1931 and it was the epicenter of the revolution experienced by Catalonia during the Spanish Revolution of 1936, until its capture by the fascists in 1939. After the Spanish transition to democracy in the 1970s, Barcelona once again became the capital of an autonomous Catalonia.

The Crown of Aragon (US: /-ɡɒn/) was a composite monarchy ruled by one king, originated by the dynastic union of the Kingdom of Aragon and the County of Barcelona (later Principality of Catalonia) and ended as a consequence of the War of the Spanish Succession. At the height of its power in the 14th and 15th centuries, the Crown of Aragon was a thalassocracy controlling a large portion of present-day eastern Iberian Peninsula, parts of what is now southern France, and a Mediterranean empire which included the Balearic Islands, Sicily, Corsica, Sardinia, Malta, Southern Italy (from 1442), and parts of Greece (until 1388).

The component realms of the Crown were not united politically except at the level of the king, who ruled over each autonomous state according to its own laws, raising funds under each tax structure, and dealing separately with each Corts or Cortes (parliaments), particularly in the Kingdom of Aragon, the Principality of Catalonia, and the Kingdom of Valencia. The larger Crown of Aragon must not be confused with one of its constituent parts, the Kingdom of Aragon, from which it takes its name.

The Hispanic Monarchy (Monarquía Hispánica in Spanish), also known as the Catholic Monarchy and historically referred to as the Monarchy of Spain, was the political entity encompassing the territories and dependencies of the Spanish Empire between 1479 and 1716. These regions maintained distinct, individual public institutions, councils, and legal systems, but were united under the control of a superior entity (the King of Spain) and common state institutional structures. This monarchy was administered under a polysynodial system of councils. The Spanish monarch acted as king (or with the corresponding title) according to the political constitution of each kingdom, state, or lordship, and thus, their formal power varied from one territory to another. However, they acted as a unified monarch over all the territories of the monarchy, almost like a Composite Monarchy.

The Monarchy included the Crown of Castile—with Granada, Navarre and the kingdoms of the Indies—and Aragon—with Sicily, Naples, Sardinia, Malta and the State of the Presidi—, Portugal and its overseas territories between 1580 and 1640, the territories of the Burgundian Circle except between 1598–1621—Franche-Comté, the Netherlands, as well as Charolais—, the Duchy of Milan, the Marquisate of Finale, the Spanish East Indies, and Spanish Africa.

The House of Barcelona was a medieval dynasty that ruled the County of Barcelona continuously from 878 and the Crown of Aragon from 1137 (as kings from 1162) until 1410. They descend from the Bellonids, the descendants of Wilfred the Hairy. They inherited most of the Catalan counties by the thirteenth century and established a territorial Principality of Catalonia, uniting it with the Kingdom of Aragon through marriage and conquering numerous other lands and kingdoms until the death of the last legitimate male of the main branch, Martin the Humanist, in 1410. Cadet branches of the house continued to rule Urgell (since 992) and Gandia. Cadet branches of the dynasty had also ruled Ausona intermittently from 878 until 1111, Provence from 1112 to 1245, and Sicily from 1282 to 1409. By the Compromise of Caspe of 1412 the Crown of Aragon passed to a branch of the House of Trastámara, descended from the infanta Eleanor of the house of Barcelona.

The 1412 Compromise of Caspe (Compromiso de Caspe in Spanish, Compromís de Casp in Catalan) was an act and resolution of parliamentary representatives of the constituent realms of the Crown of Aragon (the Kingdom of Aragon, Kingdom of Valencia, and Principality of Catalonia), meeting in Caspe, to resolve the interregnum following the death of King Martin of Aragon in 1410 without a legitimate heir. Succession through the male line, as ordained in the will of James I of Aragon should have gone to James II, Count of Urgell, however multiple others claimed the throne, which led to the "conclave" and compromise.

Ferdinand II, also known as Ferdinand I, Ferdinand III, and Ferdinand V (10 March 1452 – 23 January 1516), called Ferdinand the Catholic, was King of Aragon from 1479 until his death in 1516. As the husband and co-ruler of Queen Isabella I of Castile, he was also King of Castile from 1475 to 1504 (as Ferdinand V). He reigned jointly with Isabella over a dynastically unified Spain; together they are known as the Catholic Monarchs. Ferdinand is considered the de facto first king of Spain, and was described as such during his reign, even though, legally, Castile and Aragon remained two separate kingdoms until they were formally united by the Nueva Planta decrees issued between 1707 and 1716.

The Crown of Aragon that Ferdinand inherited in 1479 included the kingdoms of Aragon, Valencia, Mallorca, Sardinia, and Sicily, as well as the Principality of Catalonia. His marriage to Isabella is regarded as the "cornerstone in the foundation of the Spanish monarchy". They played a major role in the European colonization of the Americas, sponsoring the first voyage of Christopher Columbus in 1492. That year the couple defeated Granada, the last Muslim state in Western Europe, thus completing the centuries-long Reconquista.

The history of Spain dates to contact between the pre-Roman peoples of the Mediterranean coast of the Iberian Peninsula with the Greeks and Phoenicians. During Classical Antiquity, the peninsula was the site of multiple successive colonizations of Greeks, Carthaginians, and Romans. Native peoples of the peninsula, such as the Tartessos, intermingled with the colonizers to create a uniquely Iberian culture. The Romans referred to the entire peninsula as Hispania, from which the name "Spain" originates. As was the rest of the Western Roman Empire, Spain was subject to numerous invasions of Germanic tribes during the 4th and 5th centuries AD, resulting in the end of Roman rule and the establishment of Germanic kingdoms, marking the beginning of the Middle Ages in Spain.

Germanic control lasted until the Umayyad conquest of Hispania began in 711. The region became known as Al-Andalus, and except for the small Kingdom of Asturias, the region remained under the control of Muslim-led states for much of the Early Middle Ages, a period known as the Islamic Golden Age. By the time of the High Middle Ages, Christians from the north gradually expanded their control over Iberia, a period known as the Reconquista. As they expanded southward, a number of Christian kingdoms were formed, including the Kingdom of Navarre, the Kingdom of León, the Kingdom of Castile, and the Kingdom of Aragon. They eventually consolidated into two roughly equivalent polities, the Crown of Castile and the Crown of Aragon. The early modern period is generally dated from the union of the Crowns of Castile and Aragon by royal marriage in 1469.