I think, Free trade, and security, but there might be more.
Answer:
The slave trade diminished because the Arabs gave freedom to most slaves
During the scientific revolution, science began to change the way people thought and even lived. ... This inevitably led to the age of the enlightenment because this philosophy made people think, question, and use reason. People challenged traditional roles and customs, and began moving towards modernism.
civil rights, disbility rights, anti war movement.
The US and Soviet Union had a strained relationship during the 1970s, for the SU (soviet union) was trying to impose its doctrine in neighboring countries. America, wanted to impose democratic governments on the nations in and around the SU, which was not allowed by the Soviets.
hope this helps