Match the following terms with the correct definition.
 Question 1 options:
 Warsaw Pact
 Marshall Plan
 Truman Doctrine
 NATO
 1. 
 The idea that it was the United State's moral duty to protect free people from the spread of communism.
 2. 
 A plan to send economic aid to Europe for recovery.
 3. 
 A group of 12 nations that agreed to respond together if any single nation was attacked among them.
 4. 
 A group of seven states and countries that formed a group to protect one another if attacked and also were procommunist.