The two dates most often mentioned as “the beginning of World War II” are July 7, 1937, when the “Marco Polo Bridge Incident” led to a prolonged war between Japan and China, and September 1, 1939, when Germany invaded Poland, which led Britain and France to declare war on Hitler’s Nazi state in retaliation.
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Good luck :p
Brainliest is greatly appreciated :)
~ Emmy
the reason is because of the red army and the allies
the war started at different times
