Christopher Columbus
Since the late 20th century, historians have criticized Columbus for initiating colonization and for abuse of natives. Among reasons for this criticism is the poor treatment of the native Taíno people of Hispaniola, whose population declined rapidly after contact with the Spanish. Columbus required the natives to pay tribute in gold and cotton. Modern estimates for the pre-Columbian population of Hispaniola are around 250,000–300,000. According to the historian Gonzalo Fernandez de Oviedo y Valdes, by 1548, 56 years after Columbus landed, and 42 years after he died, fewer than 500 Taíno were living on the island. The indigenous population declined rapidly, due primarily to the first pandemic of European endemic diseases, which struck Hispaniola after 1519. The natives had no acquired immunity to these new diseases and suffered high fatalities. There is also documentation that they were overworked.
Ciboney
The Ciboney were the dominant population in Cuba until around 1450. Las Casas states that unlike the highly organized Classic Taíno to the east, the Ciboney had no integrated chiefdoms or wider political structure. In the mid-15th century, Classic Taíno from Hispaniola began migrating into eastern Cuba, overcoming the native Ciboney. These "Cuban Taíno" established chiefdoms concentrated in Oriente Province, though they established settlements as far west as Havana Province. However, the Cuban Taíno never established an island-wide political structure as existed in Hispaniola and Puerto Rico. Classic Taíno migration from Hispaniola to Cuba increased after Spanish contact, with many Taíno leaving to escape the Spanish incursion. Notably, Hispaniola Taíno chief Hatuey fled to Cuba with most of his people; he remained there until the Spanish captured and executed him. Following the Spanish conquest of Cuba in 1511 under Diego Velázquez de Cuéllar, the population of all native groups declined precipitously until they had disappeared as distinct groups by the end of the century.