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.
History of Nicaragua
In the west and highland areas where the Spanish settled, the indigenous population was almost completely wiped out by the rapid spread of new diseases brought by the Spaniards, for which the native population had no immunity, and the virtual enslavement of the remainder of the indigenous people. In the east where the Europeans did not settle most indigenous groups survived. The English introduced guns and ammunition to one of the local peoples, the Bawihka, who lived in northeast Nicaragua. The Bawihka later intermarried with runaway slaves from Britain's Caribbean possessions, and the resulting population, with its access to superior weapons, began to expand its territory and push other indigenous groups into the interior. This Afro-indigenous group became known to the Europeans as Miskito, and the displaced survivors of their expansionist activities were called the Sumu.