What factors, both internal and external, does Hitler blame Germany's problems on? and why?

After the First World War, and the treaty of Versailles, the economic and political situation was not good. Hitler was opposed to the new Weimar Republic. Also, as a german soldier, he found it hard to accept the defeat of the German Empire. As many nationalists, Hitler believed that Germany had lost the war due to betrayal. Socialists, communists and Jews were blamed, even though many had served in the war and many other were killed.

Hitler thought the German people were a superior race, that were destined to be the masters of Europe, and that jews, homosexuals and black people, among others, were a threat for Germany. According to Hitler, they were an inferior race, that was poisoning the german.