The Truman Doctrine was a policy of the United States government that aimed to prevent the spread of communism in Europe after World War II.

The Truman Doctrine provided military aid to Greece and Turkey to help them resist communist insurgencies.

The Marshall Plan was a program of economic aid to Western Europe that was designed to help rebuild the region after World War II.

The United States provided $13 billion in economic aid to Western Europe through the Marshall Plan.

The Marshall Plan helped to rebuild Western Europe's economy, prevent the spread of communism, and promote democracy and human rights.

NATO was founded in 1949.

NATO was established as a military alliance between the United States and Western Europe to deter Soviet aggression.

There were 12 original members of NATO: Belgium, Canada, Denmark, France, Iceland, Italy, Luxembourg, the Netherlands, Norway, Portugal, the United Kingdom, and the United States.

The Berlin Airlift was a military operation to supply West Berlin with food and supplies after the Soviet Union blockaded the city in 1948.

The Berlin Airlift lasted for 11 months, from June 1948 to May 1949.

There were approximately 800 planes involved in the Berlin Airlift.

Approximately 2 million tons of supplies were delivered to West Berlin during the Airlift.

The Berlin Airlift showed the determination of the Western Allies to defend West Berlin, helped to ease tensions between the United States and the Soviet Union, and led to the reunification of Germany.

The Truman Doctrine and Containment in Europe helped to prevent the spread of communism in Europe, led to the creation of NATO, and helped to rebuild Western Europe's economy.

The Truman Doctrine and Containment in Europe helped to shape the Cold War, prevent a third world war, and promote democracy and human rights in Europe.