In the letter sent by British government to Washington in February 1947, it was stated that British couldn't protect Greece and Turkey anymore due to the funds.
Heard the letter, Truman demanded the US to help Greece and Turkey. He wanted to give support including troops to countries who want to fight communisms. This is what we called as Truman Doctrine.
In Washington, it is believed that communism could only be stopped if Western Europe became wealthy.
a simple belief made The Americans eager to do anything to prevent communism to spread. therefore, the Marshall Plan that contained offering massive economic aid from USA
Leaders of 16 West European countries met in Paris to wrote a recovery plan. As US accepted it, the Marshall Plan began successfully and ended in 1952.
Cominform was created to strengthen the communist power in different countries. An action was taken in France & Italy where the communist workers encountered a series of strikes and demonstrations. However, it failed. therefore, Comecon was created for the economic bloc of Eastern Europe countries. However, it did not run successfully.