text: On June 5, 1948, at the dedication of the War Memorial in Omaha, Nebraska, U.S. President Harry S. Truman remarked, "We must make the United Nations continue to work, and to be a going concern, to see that difficulties between nations may be settled just as we settle difficulties between States here in the United States. When Kansas and Colorado fall out over the waters in the Arkansas River, they don't go to war over it; they go to the Supreme Court of the United States, and the matter is settled in a just and honorable way. There is not a difficulty in the whole world that cannot be settled in exactly the same way in a world court". The cultural moment of the late 1940s was the peak of World Federalism among Americans.
  Founding of the United Nations
  World War II (1939–1945) resulted in an unprecedented scale of destruction of lives (over 60 million dead, most of them civilians), and the use of weapons of mass destruction. Some of the acts committed against civilians during the war were on such a massive scale of savagery, they came to be widely considered as crimes against humanity itself. As the war's conclusion drew near, many shocked voices called for the establishment of institutions able to permanently prevent deadly international conflicts. This led to the founding of the United Nations (UN) in 1945, which adopted the Universal Declaration of Human Rights in 1948.