Both Americans and Europeans were aware of significant historical antecedents. In the 1850s, anti-slavery forces in the United States developed a
free soil strategy of containment to stop the expansion of slavery until it later collapsed. Historian
James Oakes explains the strategy: Between 1873 and 1877,
Germany repeatedly intervened in the internal affairs of France's neighbors. In Belgium, Spain, and Italy, Chancellor
Otto von Bismarck exerted strong and sustained political pressure to support the election or appointment of liberal, anticlerical governments. That was part of an integrated strategy to promote
republicanism in France by strategically and ideologically isolating the clerical-monarchist regime of President
Patrice de MacMahon. It was hoped that by surrounding
France with a number of liberal states, French Republicans could defeat MacMahon and his reactionary supporters. The modern concept of containment provides a useful model for understanding the dynamics of this policy. After the 1917
October Revolution in Russia, there were calls by Western leaders to isolate the
Bolshevik government, which seemed intent on promoting worldwide revolution. In March 1919, French Premier
Georges Clemenceau called for a
cordon sanitaire, a ring of non-communist states, to isolate
Soviet Russia. Translating that phrase, US President
Woodrow Wilson called for a "quarantine." The World War I allies
launched an incursion into Russia, as after the Bolshevik Revolution,
Vladimir Lenin withdrew the country from the First World War, allowing Germany to reallocate troops to face the Allied forces on the Western Front. Concurrently, President Wilson became increasingly aware of the
human rights violations perpetuated by the new
Russian Soviet Federative Socialist Republic, and opposed the new regime's
militant atheism and advocacy of a
command economy. He also was concerned that
Marxism–Leninism would spread to the remainder of the Western world, and intended his landmark
Fourteen Points partially to provide
liberal democracy as an alternative worldwide ideology to Communism. Despite reservations, the United States, as a result of the fear of
Japanese expansion into Russian-held territory and their support for the Allied-aligned
Czech Legion,
sent a small number of troops to
Northern Russia and
Siberia. The United States also provided indirect aid such as food and supplies to the
White Army. leading the allies to ultimately withdraw from Russia. The U.S. initially refused to recognize the Soviet Union, but President
Franklin D. Roosevelt reversed the policy in 1933 in the hope to expand American export markets. The
Munich Agreement of 1938 was a failed attempt to contain Nazi expansion in Europe. The U.S. tried to contain Japanese expansion in Asia from 1937 to 1941, and Japan reacted with its
attack on Pearl Harbor. After Germany
invaded the Soviet Union in 1941 during
World War II, the U.S. and the Soviet Union found themselves
allied against Germany and used
rollback to defeat the
Axis powers: Germany, Italy, and Japan. ==Origin (1944–1947)==