Answer: (d) Congress was unable to deal with threats from foreign powers.
Explanation: Just took the test :)
The attempt to stop communism from spreading to Greece and Turkey after World War II was due to the Truman Doctrine.
The Truman Doctrine was a law proposed by US President Harry Truman. His goal was to stop the spread of communism (also known as containment). To ensure that Greece and Turkey (which are close to the Soviet Union) did not fall under the control of a communist nation, the US agreed to give $400 million to these countries. The goal was to help these countries recover from World War II as well as develop a political and economic alliance.
The excerpt above is part of the 14th amendment. This amendment was passed in 1868 and was supposed to help protect newly freed slaves. The goal in passing this was to ensure that African-Americans had the same legal rights as white citizens.
This due process clause has been used in several important Supreme Court cases to protect American citizens.