world war 2 started in 1939 when germany invaded this country
Which country did Germany invade in 1939 to start World War II?
World War II officially began on September 1, 1939, when Germany invaded Poland. This invasion led to the declaration of war on Germany by Britain and France, marking the start of one of the most significant conflicts in human history.
Summary: Germany’s invasion of Poland in 1939 triggered the start of World War II. This act spurred Britain and France to declare war on Germany.