History 10 Midterm By tylerschoenly Period: Jan 1, 1939 to Dec 31, 1945 WWII - Americans Sep 5, 1939 United States proclaims its neutrality. Mar 11, 1941 President Roosevelt signs the Lend-Lease Act. Jun 14, 1941 United States freezes German and Italian assets in America. Jun 26, 1941 Roosevelt freezes Japanese assets in United States and suspends relations. Dec 7, 1941 Japenese bomb Pearl Harbor. Dec 8, 1941 The United States declares war on Japan. Jan 1, 1942 Declaration of the United Nations signed by 26 Allied nations. Jan 16, 1945 U.S. 1st and 3rd Armies link up after a month long separation during the Battle of the Bulge. Jul 16, 1945 First U.S. atomic bomb test. Oct 24, 1945 United Nations is born.