WORLD HISTORY

Detailed explanation-1: -They had never experienced smallpox, measles or flu before, and the viruses tore through the continent, killing an estimated 90% of Native Americans. Smallpox is believed to have arrived in the Americas in 1520 on a Spanish ship sailing from Cuba, carried by an infected African slave.

Detailed explanation-2: -Smallpox was the disease brought by Europeans that was most destructive to the Native Americans, both in terms of morbidity and mortality. The first well-documented smallpox epidemic in the Americas began in Hispaniola in late 1518 and soon spread to Mexico.

Detailed explanation-3: -Epidemic disease was the overwhelming cause of the population decline of the Indigenous peoples. After initial contact with Europeans and Africans, Old World diseases caused the deaths of 90 to 95% of the native population of the New World in the following 150 years.

Detailed explanation-4: -Europeans carried a hidden enemy to the Indians: new diseases. Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians.

Detailed explanation-5: -Several factors, including devastating epidemics of smallpox, which killed many Aztec warriors and nobles, facilitated the Spanish capture of the Aztec capital in 1521. Native Americans came to see this smallpox epidemic as a true turning point in their history.

Detailed explanation-6: -What killed so many people so quickly? The symptoms were a yellowing of the skin, pain and cramping, and profuse bleeding, especially from the nose. A recent analysis concludes the culprit was a disease called leptospirosis, caused by leptospira bacteria.