germany’s invasion of which country started world war ii? great britain the soviet union france poland

Germany’s invasion of Poland is the event that started World War II.

Correct Answer

• On 1 September 1939, German forces invaded Poland, leading Britain and France to declare war on Germany within days, marking the formal beginning of World War II.

• So, among the options “Great Britain, the Soviet Union, France, Poland,” the correct choice is Poland.