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World War II Started
World War II started when Germany invaded Poland.
https://www.britannica.com/event/World-War-II -
US enters WWII
The US entered WWII after the bombing on Pearl Harbor
https://www.nationalww2museum.org/students-teachers/student-resources/research-starters/america-goes-war-take-closer-look -
D-Day
UK, US, French, and Canadian troops attacked German forces from the coast of Northern France. It was the largest military naval, air and land operation ever attempted and marked the start of the campaign to liberate Nazi-occupied north-west Europe.
https://www.history.com/topics/world-war-ii/d-day -
Germany Surrenders
Germany surrender on the west on the 7th of May, and they surrender on the east on the 9th of May. https://www.history.com/this-day-in-history/germany-surrenders-unconditionally-to-the-allies-at-reims -
Atomic Bombs Dropped
Atomic Bomb "Little Boy" was dropped on the city of Hiroshima, Japan on August 6, 1945 at 8:15 am. Three days later, atomic bomb "Fat Man" was dropped on the city of Nagasaki, Japan at 11:02 am on August 9, 1945. This was done in order to try to get Japan to surrender.
https://www.history.com/topics/world-war-ii/bombing-of-hiroshima-and-nagasaki