what specific incident started World War II?

AThe German invasion of Poland

BThe Japanese invasion of Manchuria

CThe American bombing of Hiroshima

DThe Japanese bombing of Pearl Harbor

(I know it's not the last two)


What was the main cause of World War II?

AFranklin Roosevelt was elected president in 1940.

BThe US sold goods to its allies in Europe.

CThe US declared war on Germany and Italy.

DGermany began to expand its territory through conquest.

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