Easier travel and trade.. with others outside
The Truman Doctrine was an American foreign policy to stop Soviet imperialism during the Cold War. It was announced to Congress by President Harry S. Truman on March 12, 1947 when he pledged to contain Soviet threats to Greece and Turkey.
Hitler pursued Anschluss by forcing the chancellor to put Austrian nazis in control
I he best answer is 3 I am 87 percent sure