Explanation:
As World War II transformed both the United States and the USSR, turning the nations into formidable world powers, competition between the two increased. Following the defeat of the Axis powers, an ideological and political rivalry between the United States and the USSR gave way to the start of the Cold War.
During WWII, George C. Marshall served as chief of staff of the US army from September 1, 1939 until November 18, 1945.
During his tenure he helped train US soldiers in modern warfare as an instructor at the Army War College in Pennsylvania.
He inherited an outdated and poorly equiped army, so he was also responsible for the modernization of the army and co-ordinated a large scale expansion of the military.
While Marshal wrote the document that would become the central strategy for Allied operations in Europe, Dwight Eisenhower would become the Supreme Commander of Operation Overlord.
He abolished slavery and started the civil war
