The U.S. politician and diplomat famous for the Marshall Plan after World War II is George C. Marshall. As Secretary of State, he proposed this economic aid initiative in 1947 to help rebuild war-torn European countries. The plan aimed to prevent the spread of communism by fostering economic stability and recovery. Marshall’s vision recognized the importance of strengthening democratic governance and promoting cooperation among nations. His efforts earned him the Nobel Peace Prize in 1953 and left a lasting impact on international relations and post-war reconstruction in Europe.