The most important similarity between the Truman Doctrine and the Marshall Plan is that both were key components of U.S. foreign policy during the early Cold War era, aimed at containing the spread of communism and supporting Western European recovery.
The Truman Doctrine, announced in 1947, established a policy of providing political, military, and economic support to countries resisting communist influence, specifically focusing on Greece and Turkey at the time. It was based on the belief that the U.S. had a responsibility to support free peoples who were facing external pressures or internal subversion.
Similarly, the Marshall Plan, formally known as the European Recovery Program and enacted in 1948, aimed to provide financial assistance to help rebuild European economies after World War II. By restoring economic stability and growth, the U.S. sought to prevent the spread of communism, which often thrived in conditions of poverty and instability.
In summary, both the Truman Doctrine and the Marshall Plan were integral strategies employed by the United States to contain communism and promote political stability and economic recovery in Europe during the Cold War.