World war ll By 67890abcde Period: Sep 1, 1939 to Oct 6, 1939 Germeny attacks poland https://www.youtube.com/watch?v=ZLAqVtXph8w Sep 3, 1939 Great britian and France declare war on Germeny https://encyclopedia.ushmm.org/content/en/timeline-event/holocaust/1939-1941/britain-and-france-declare-war#:~:text=Honoring%20their%20guarantee%20of%20Poland's,the%20German%20and%20British%20militaries. Period: Jul 1, 1942 to Jul 27, 1942 1st battle of El Alamien https://www.history.com/this-day-in-history/the-battle-of-el-alamein-begins Aug 6, 1945 U.S. drops an atomic bomb on hiroshima https://www.history.com/topics/world-war-ii/bombing-of-hiroshima-and-nagasaki Aug 9, 1945 U.S drops atomic bomb on Nagasaki https://www.history.com/topics/world-war-ii/bombing-of-hiroshima-and-nagasaki