Which country most supported the U.S during the cold war?

During the Cold War, the country that most supported the U.S. was West Germany. As a key ally in Europe, West Germany played a crucial role in NATO and served as a frontline state against the spread of communism in Eastern Europe. The U.S. heavily invested in West Germany's military and economic recovery, viewing it as a vital partner in the struggle against Soviet influence. This alliance helped solidify West Germany's position as a central player in the Western bloc.