Slaves provided much of the labor on plantations that grew cash crops.
Plantations were the main economic activity in the American South during the antebellum period. These plantations cultivated cotton, tobacco, sugar, indigo, and rice. The warm climate, plentiful rainfall and fertile soil meant that the plantations were able to flourish. However, they were labour-intensive, and most workers were African slaves. Planters held dozens, or sometimes hundreds, of slaves, making slave labor very important to the economy of the Southern colonies.
The slaves produced the crops that were needed. Thye produced the crops on large plantations that were owned by their masters. When the crops were grown, the owner had to sell them for money. The slaves helped the process by taking care of the plants. The slaves also were sold to people which gave money to the people who found or sold them. They also made the cash crops which were similar to tobacco, corn and wheat. When slaves run away the people who find them recieve rewards of money. This also helps people with economy.
Mainly the Soviet Union backed the Viet Minh otherwise known as the North Vietnamese as the USSR backed many communist/socialist countries around the world in small proxy wars against the United States to try and gain influence and expand communism. So your answer would be the Union of Soviet Socialist Republics.
