States and rights was a very large factor contributing to the Civil War. With Lincoln becoming president and representing the North, the Southern states seceded, leading to a war. The state governments of the South argued, since the constitution and federal government was created by the states, the federal government had no right to stop from seceding. President Lincoln and other northerners disagreed and wanted to preserve the Union.
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The Potsdam Conference is perhaps best known for President Truman's July 24, 1945 conversation with Stalin, during which time the President informed the Soviet leader that the United States had successfully detonated the first atomic bomb on July 16, 1945.
