We need to know what the answer to #2 was first
Push factors are the example of poverty, political and religious persecution. the like of which were in Europe during the mass exodus to the new world.
Pull factors include job opportunity,education opportunity, peace and freedoms as well as higher standards of lives.
Answer:
Buddhism
Had the same question before
The United States got the Soviet Union to remove the missiles by respecting Cuba as a sovereign territory of the Soviet Union.