How did World War 2 start

On September 1, 1939, Hitler invaded Poland from the west; two days later, France and Britain declared war on Germany, beginning World War II. On September 17, Soviet troops invaded Poland from the east.

Explanation:

On September 1, 1939, Hitler invaded Poland from the west; two days later, France and Britain declared war on Germany, beginning World War II.

Explanation:

look ongoog you might find it

during the hitler era and it caused them to declare war on germany