United States History 1945-1955 By bnifreshman Period: Jan 1, 1945 to Dec 31, 1955 United States history of 1945-1955 Aug 6, 1945 U.S.A Drops Atomic Bomb On Japan Jan 22, 1946 President Truman creates the Central Intelligence Agency. Jun 1, 1946 The United States tests a 20-kiloton atomic bomb near Bikini Atoll in the Marshall Islands. Jun 5, 1947 Marshall Plan is announced Jul 8, 1947 3AD reactivated as training unit, Ft. Knox, KY Jun 24, 1948 Berlin Blockade by USSR begins Jul 17, 1949 NATO radified as a military organizatio Sep 12, 1949 USSR drops its first atomic bomb Mar 14, 1951 United Nations forces recapture Seoul
