How did the u. s. soviet relations change over the course of the war, from the lend- lease program in 1941 to the potsdam conference in 1945?

b) the confederacy had to pay all union war expenses.

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.