So basically Germany was upset for being constantly mistreated. Hitler then arrived on the scene. He was very intelligent at oratory and was able to get into the anger the German people felt. He also was able to bring back their dreams of empire and the German greatness that had led in part to World War I. His power of oratory and electoral intelligence was in a very big and important a reason for the fall of the Weimar Republic. He won election and the Weimar Republic.
The Nazi's were a strongly nationalistic party and opposed what the German people saw as a shameful defeat and settlement after WWI in the Versailles Treaty. The Versailles Treaty also meant that Germany had to pay enormous (billions of dollars) war reparations which absolutely destroyed the German economy. In Mein Kampf Hitler rejected the validity of the Treaty. Hitler was an incredibly charismatic speaker. He could inspire riots and convert people to easily. The Nazi's also had excellent propaganda (Joseph