The National Government could not force the states to obey it's laws.
The domino theory was believed that if one country went communist, the rest of the countries around them would also join them and be communist. In the vietnam war however, the domino theory was the basis of containment for the United States. This containment strategy was to stop communist aggression in South East Asia. I hope this helps!
Answer:
Conformity in the 1950s During the post WWII period in America, the face of the nation changed greatly under the presidency of Truman and Eisenhower. America underwent another era of good feelings as they thought themselves undefeatable and superior over the rest of the world.
Explanation:
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From what google is telling me. It is about primary and secondary source.