Why did ww2 start exactly

It’s because at the time Germany’s chancellor or leader, Adolf Hitler, sent the National Socialist German Workers’ Party (Nazis) to invade Poland because Nazi propagandists thought Poland had been planning to dismember Germany with Great Britain and France.

Or here is something else, Hitler also wanted revenge since Hitler fought in World War 1 but he was shot and injured. While he was recovering, he heard that Germany has lost the war and Hitler was furious since he loved his country very much. Soon, he invaded Poland and then later on in history, he started the Holocaust.

Ifeel like this is a very good quesyion