December 7, 2024

1787 – Delaware becomes the first state to ratify the United States Constitution.

1917 – During World War I, the U.S. declares war on Austria-Hungary.

1941 – The Imperial Japanese Navy, launching 414 attack and fighter aircraft from the fleet carriers, Hiryu, Soryu, Shokaku, Zuikaku, Akagi and Kaga, carry out what appears to be a surprise attack on the United States Pacific Fleet, Army and Marine air and ground forces at Pearl Harbor, and elsewhere on Oahu island, Hawaii.