There were similarities and differences between the Truman Doctrine and the Marshall Plan. Both of these plans were designed to help countries that were fighting the spread of communism. While the Truman Doctrine offered aid to all nations fighting the spread of communism, it essentially was used to provide economic and military aid to Greece and to Turkey to keep those countries from becoming communist. We were very concerned the Soviet Union was actively trying to spread communism to those two countries. $400 million was provided to help these countries in their fight against communism.
A few months after the Truman Doctrine was announced, the European Recovery Program, also called the Marshall Plan, was unveiled. This plan also offered aid to any country fighting the spread of communism. This plan provided aid to 16 countries in order to strengthen their economies and to reduce the likelihood that these countries would become communist. Billions of dollars were spent to bolster the economies of these countries. These countries benefited significantly from the Marshall Plan.
While both plans were designed to stop the spread of communism, the Marshall Plan was far more encompassing and impacted far more countries than the Truman Doctrine did. Both were effective in accomplishing their goals.