Which statements about the early years of world war 2 are correct?

- Germany started ww2 when it invaded poland

-in Battle of Britain Germany used bombs to attack GB

-German Troops were stopped by allied forces before they reached Paris

- in the early stages of ww2 Germany demonstrated immense military power

nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei the fighting in iwo jima and okinawa affected the allies' pacific strategy because truman decided to drop the atomic bomb on mainland japan.

ask google there you might be able to find an answer for the question you're trying to ask

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health and medicine because people are dying from not being healthy or not strong enough medicine