Why was Hitler able to reach power?
The political parties of Germany fought from 1929 to 1933. Adolf Hitler was a member of the Nazi party in the early 1920's. He gave tremendous speeches to get people to follow him. Also, his puppets, the brown shirts, burned the place where the government met in Germany. Hitler then framed the Communists. Because of his speeches and backstabbing, he was able to reach power.
In the mid to late 1930's, Hitler took what had been taken from Germany after World War I, such as the Rhineland. Neville Chamberlain signed the Munich Agreement to give Hitler the Sudetenland, and acted like you could trust Hitler. This only gave Hitler the knowledge that no one was going to stand up to him until he blatantly attacked another nation.
In the war, Hitler used blitzkrieg, lightning war, to quickly take over countries such as Poland, Norway and France, and Romania. By the end of 1941, he had pushed all the way to just short of Moscow in the East, North Africa in the south, Norway in the north, and completely through Spain in the west.