During the colonial era where Europeans started settling and colonizing all over the country brought many germs with them that they were immune too. Because of that fact "New world diseases" or option A such as: chicken pox, the flu, and malaria sweeping through the country at a alarming rate killing at least 90% of Native Americans in the country.
America wanted to help stop communism from spreading all over the world so they tried to help Vietnam by keeping south Vietnam a non communist government.
FDR got us through the great depression and world war II He humanized the american industrial system He was a major transformative leader He gave us social security
