USA HISTORY

Detailed explanation-1: -Smallpox, measles, malaria, yellow fever, typhoid, typhus, and the venereal diseases were among those that were introduced by the European settlers.

Detailed explanation-2: -17th Century-European settlers bring smallpox to North America.

Detailed explanation-3: -Smallpox is believed to have arrived in the Americas in 1520 on a Spanish ship sailing from Cuba, carried by an infected African slave. As soon as the party landed in Mexico, the infection began its deadly voyage through the continent.

Detailed explanation-4: -Along with measles, influenza, chickenpox, bubonic plague, typhus, scarlet fever, pneumonia and malaria, smallpox spelled disaster for Native Americans, who lacked immunity to such diseases.

Detailed explanation-5: -During the 18th century the disease killed an estimated 400, 000 Europeans each year, including five reigning monarchs, and was responsible for a third of all blindness. Between 20 and 60% of all those infected-and over 80% of infected children-died from the disease.