How was the rise of Nazism in Germany responsible for the Second World War?

The democratic government of Germany could not solve many of its problems. So the Nazi Party easily progressed under the leadership of Hitler by 1934. He rejected the Treaty of Versailles and increased his military power. He fortified the Rhineland and annexed Austria, Sudetenland and Czechoslovakia, etc. into his own empire. He wanted to regain the old glory and prestige of Germany and make it a world power. In order to achieve its objectives the Nazi Party followed the path of war.