The United Nations began on October 24, 1945. The countries who began it were France, the United Kingdom, the Soviet Union, China, the United States and many others who wanted to take away the differences between countries that cause war. It was not until December 4, 1945 that the Senate actually approved of the United States full cooperation and participation in the United Nations. The votes for approval were 65 to 7.
Up until World War II, the Senate had focussed on keeping the United States from becoming a part of the League of Nations. Yet because World Wr II was so horrible the Senate and the American people began to be willing to try to trust the United Nations, which was an even more powerful organization. Five years later, in 1950, the Security Council, with the support of the United States, voted and agreed on a peacekeeping force for Korea. This was the first time that the United Nations had come together to find a peaceful way to end the armed conflict.
