about 70 Jewish communities were destroyed. This period saw a contrast in landowning characteristics between the western and north-western territories in Andalusia, where the nobility and the religious orders succeeded into the creation of large latifundia entitled to them, whereas in the Kingdom of Granada (eastern Andalusia), a Crown-auspiciated distribution of the land to medium and small farmers took place. Upon the conclusion of the Granada War, the Nasrid Sultanate of Granada (the remaining Muslim-ruled polity in the Iberian Peninsula after 1246) capitulated in 1492 to the military strength of the Catholic Monarchs, and it was integrated from then on in the Crown of Castile. Spanish Empire In 1469, the crowns of the Christian kingdoms of Castile and Aragon were united by the marriage of their monarchs, Isabella I and Ferdinand II, respectively. 1478 commenced the completion of the conquest of the Canary Islands. In 1492, Jews were forced to choose between conversion to Catholicism or facing expulsion. As a result, as many as 200,000 Jews were expelled from Castile and Aragon. This was followed by expulsions in 1493 in Aragonese Sicily and Portugal in 1497. The Treaty of Granada guaranteed religious tolerance towards Muslims, for a few years before Islam was outlawed in 1502 in Castile and 1527 in Aragon, leading the remaining Muslim population to become nominally Christian Moriscos. About four decades after the War of the Alpujarras (1568–1571), a significant proportion of the moriscos were expelled, settling primarily in North Africa. From 1609 to 1614, over 300,000 Moriscos were sent on ships to North Africa and other locations, and, of this figure, around 50,000 died resisting the expulsion, and 60,000 died on the journey. The year 1492 also marked the arrival of Christopher Columbus in the New World, during a voyage funded by Isabella. Columbus's first voyage crossed the Atlantic and reached the Caribbean Islands, beginning the European exploration and conquest of the Americas, although Columbus remained convinced that he had reached the Orient. Large numbers of indigenous Americans died in battle against the Spaniards during the conquest, while more died from various new Eurasian diseases that travelled more quickly than the Spanish conquerors. The death toll during the initial period of Spanish conquest, from Columbus's initial landing until the mid 16th century, is estimated as high as 70 million indigenous people out of a population of 80 million, as imported diseases such as smallpox, measles, influenza,