The big stick is the correct answer.
Answer: The main goal of the US foreign policy during the presidency of Ronald Reagan (1981–1989) was winning the Cold War and the rollback of communism—which was achieved in the Revolutions of 1989 in Eastern Europe during 1989; in the German reunification in 1990; and in the Dissolution of the Soviet Union in 1991.
Explanation:
Congress(house of representatives and the senate put together)
This statement is true.
When making foreign trading policies, things like tariffs decide how many things will be imported from where. If you have a most favored nation, you give them lower tariffs and thus motivate them to trade more with you and you help their economy. There can also be an opposite when you make tariffs higher for someone in order to reduce their importing.