For 6 months is the correct answer!
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This was the result of the bombings of Hiroshima and Nagasaki
Answer:
But the 1920s were an age of extreme contradiction. The unmatched prosperity and cultural advancement was accompanied by intense social unrest and reaction. The same decade that bore witness to urbanism and modernism also introduced the Ku Klux Klan, Prohibition, nativism, and religious fundamentalism.
It is B because The fascist leaders in Germany and Italy want a war to test their new strength, appeasement by the British and France gave Hitler time to prepare his wartime strategy, and Invasion of China lead to the Japan joining the war. Actually, for B it is that Germany invaded Poland which technically started WW2