You means slaves? What time period?
The United States came to the aid of South Korea at the head of a United Nations force composed of more than a dozen countries. Communist China joined North Korea in the war in November 1950, unleashing a massive Chinese ground attack against American forces. The Soviet Union also covertly supported North Korea.
George Washington was the most responsible for keeping the colonial army together.
Alexander the great unified Greek City States, I think. Hope I could help
The answer to the question is d