Indigenous peoples of the Americas Smallpox killed from one third to half of the native population of Hispaniola in 1518. By killing the Incan ruler Huayna Capac, smallpox caused the Inca Civil War of 1529–1532. Smallpox was only the first epidemic. Typhus (probably) in 1546, influenza and smallpox together in 1558, smallpox again in 1589, diphtheria in 1614, measles in 1618—all ravaged the remains of Inca culture. Smallpox killed millions of native inhabitants of Mexico. Unintentionally introduced at Veracruz with the arrival of Pánfilo de Narváez on April 23, 1520, smallpox ravaged Mexico in the 1520s, possibly killing over 150,000 in Tenochtitlán (the heartland of
Population history of indigenous peoples of the Americas causes within their own belief systems. Soon after Europeans and enslaved Africans arrived in the New World, bringing with them the infectious diseases of Europe and Africa, observers noted immense numbers of indigenous Americans began to die from these diseases. One reason this death toll was overlooked is that once introduced, the diseases raced ahead of European immigration in many areas. Disease killed a sizable portion of the populations before European written records were made. After the epidemics had already killed massive numbers of natives, many newer European immigrants assumed that there had always been relatively few indigenous peoples. The