World War II began when Germany invaded Poland in 1939. The invasion began on September 1, but the war didn't begin officially until Great Britain and France declared war on Germany.Is World War 2 the longest war?
Lasting from 1939 to the defeat of Nazi Germany in 1945, the Battle of the Atlantic was the longest continuous campaign of World War II.Did World War 2 change the world?
How World War Ii Changed the World. With the defeat of Germany, the Soviet Union acquired much of Eastern and Central Europe, greatly expanding their territory and boosting their economy, which helped to push them to the forefront as a superpower. This also divided the continent of Europe in half: the oppressed Communist bloc of the U.