wns of the Christian kingdoms of Castile and Aragon were united by the marriage of Isabella I of Castile and Ferdinand II of Aragon. 1478 commenced the completion of the conquest of the Canary Islands and in 1492, the combined forces of Castile and Aragon captured the Emirate of Granada, ending the last remnant of a 781-year presence of Islamic rule in Iberia. The Treaty of Granada guaranteed religious tolerance toward Muslims. The year 1492 also marked the arrival in the New World of Christopher Columbus, during a voyage funded by Isabel. That same year, Spain's Jews were ordered to convert to Catholicism or face expulsion from Spanish territories during the Spanish Inquisition. A few years later, following social disturbances, Muslims were also expelled under the same conditions.
As Renaissance New Monarchs, Isabel (Elizabeth) and Fernando (Ferdinand) centralised royal power at the expense of local nobility, and the word España, whose root is the ancient name Hispania, began to be commonly used to designate the whole of the two kingdoms. With their wide-ranging political, legal, religious and military reforms, Spain emerged as the first world power.
Imperial Spain
The unification of the crowns of Aragon and Castile by the marriage of their sovereigns laid the basis for modern Spain and the Spanish Empire, although each kingdoms of Spain remain as separate countries, in social, political, laws, currency and language. Spain was Europe's leading power throughout the 16th century and most of the 17th century, a position reinforced by trade and wealth from colonial possessions. It reached its apogee during the reigns of the first two Spanish Habsburgs – Charles I (1516–1556) and Philip II (1556–1598). This period saw the Italian Wars, the revolt of the comuneros, the Dutch revolt, the Morisco revolt, clashes with the Ottomans, the Anglo-Spanish war and wars with France.
The Spanish Empire expanded to include great
