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.
Antihaitianismo
Human Rights Watch has stated in their reports that the differences between Haitians and Dominicans can be based on colonial times from linguistic, cultural, and racial differences. For instance, the Dominican Republic was governed by the Spanish, and thus acquired part of their culture from the Spanish, mixed with African and Native American. Haiti, on the other hand, was governed by the French, and its culture is a mixture of French, African and Native American. The majority of Haiti's population is descended almost entirely from African slaves, while Dominicans possess a multiracial mix of Spanish, African and to a lesser extent, Native American ancestry. It is evident that historical background is related between the two countries, however, there are major cultural divisions.
"Antihaitianismo" can be traced back to a policy of racial segregation instituted by the Spaniards in the Captaincy General of Santo Domingo (present-day Dominican Republic). Prior to the arrival of Europeans, the island was split into absolutist chiefdoms, three where modern-day Santo Domingo now exists, and two where modern-day Haiti now exists (albeit also including some territory which is currently part of Santo Domingo). Carib people from islands further south were often at war with the Taíno people. Columbus reached the island in 1492 (slaves imported from Africa arrived from 1503 onwards—many natives were also soon enslaved), and within a few decades the Spanish controlled most of the island. During the 17th century, however, the French also began maneuvering for control, and in 1697 acquired the western portion (now part of Haiti—whereas the Spanish portion encompassed the modern Dominican Republic). During the 1790s and early 19th century, the French and Spanish battled back and forth across the island; by 1809 the Haitian Revolution had resulted in the overthrow of both French and Spanish control. The Spanish briefly retook the eastern portion that same year, but in 1821 lost control again in another rebellion. Shortly afterwards, Haitian forces again briefly controlled the entire island, from 1822 to 1844. In 1844 the secret revolutionary movement called "La Trinitaria" took place and the Dominican Republic declared its independence defeating the Haitian forces. After several tumultuous decades, the Spanish briefly acquired nominal control of the Dominican Republic in the 1860s, setting off another war. By the late 19th century, over three hundred years of European control was ended; the modern history of west Hispaniola (Haiti) and east Hispaniola (Dominican Republic) had begun.