Describe the influence of individuals on social and political developments of this era in American History

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

Why is the end of the cold war tied to the american domestic economy during this time?

How did the united states respond when north vietnam attacked a us warship and sent troops to south vietnam in the early 1960s? a. the united states declined to assist south vietnam against the north. b. us leaders authorized south vietnam to invade north vietnam. c. the president did not sign the gulf of tonkin resolution. d. congress authorized the president to escalate the conflict.