<span>Born a slave, Harriett Tubman became a </span>famous<span> "conductor" on the </span>Underground Railroad, leading hundreds of slaves to freedom.<span> </span>
The united states is a republic democracy .
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."