European Colonization

The European colonization of the Americas forever changed the lives and cultures of the Native Americans. In the 15th to 19th centuries, their populations were ravaged, by the privations of displacement, by disease, and in many cases by warfare with European groups and enslavement by them. The first Native American group encountered by Columbus, the 250,000 Arawaks of Haiti, were enslaved. Only 500 survived by the year 1550, and the group was extinct before 1650.
In the 15th century Spaniards and other Europeans brought horses to the Americas. Some of these animals escaped and began to breed and increase their numbers in the wild. Ironically, the horse had originally evolved in the Americas, but the last American horses, (species Equus Scotti and others died out at the end of the last ice age. The re-introduction of the horse had a profound impact on Native American culture in the Great Plains of North America. This new mode of travel made it possible for some tribes to greatly expand their territories, exchange goods with neighboring tribes, and more easily capture game.
Europeans also brought diseases against which the Native Americans had no immunity. Chicken pox and measles, though common and rarely fatal among Europeans, often proved fatal to Native Americans, and more dangerous diseases such as smallpox were especially deadly to Native American populations. It is difficult to estimate the total percentage of the Native American population killed by these diseases. Epidemics often immediately followed European exploration, sometimes destroying entire villages. Some historians estimate that up to 80% of some Native populations may have died due to European diseases. For more information, see population history of American indigenous peoples.