Name the document that promised assistance from the United States to any country threatened by European nations. Who sponsored this document? Why was it important to the United States?

The document was called the Truman Doctrine. It Written by Harry Truman, the President of the United States in 1947 to stop the threats of Soviet geopolitical expansion during the Cold War. The document stated that it would assist any democratic nation under threat from authoritarian forces using political, military and economic aide.

The Truman Doctrine is the document that promised assistance from the United States to any country threatened by European nations. President Harry S. Truman sponsored this document. It important to the United States because the U. S. needed assistance for Greece and Turkey to forestall communist domination of the two nations.