I believe it is D.
Because barter system. Like it kinda explains its self.
Farmers plant crops and some even live at there farms hunters kill animals,
In 1830 Congress, urged on by President Andrew Jackson, passed the Indian Removal Act which gave the federal government the power to relocate any Native Americans in the east to territory that was west of the Mississippi River.
Answer:1) 3. 1973
2) 3. Saigon
Explanation: In 1973, the United States officially pulled their troops out of the war after 18 years of fighting.
North Vietnam in 1975 closed in on Saigon and bombed it, hence "The Fall of Saigon."