I presume you mean WW2 not 11, but i brought an end to the great depression
The atomic bombings of the Japanese cities of Hiroshima and Nagasaki .
End of World War 1
1920 -- Nov 11, 1918
War World 11 never happend. World War II happened from 1939-1945.
If you are referring to World War 1, it was the Armistice on 11 November 1918.
When: 11 November 1918 around 11:00AM. What: They stopped shooting.
The Japanese attack on the US Naval base at Pearl Harbour (December 1941).
Truman was President at the end of WW2.
On the 11th November at 11 AM as that was when it finished.
See: COLD WAR
Feb 11, 2020 ยท World War II ended with the unconditional surrender of Germany in May 1945
-It's "Veteran's Day", originally "Armistice Day" to celebrate the end of World War One, "The War to End all Wars".