The Treaty of Versailles in the mind of the Germans stabbed them in the back, especially the guilt clause that made them take blame for the First World War. Hitler capaitalized on these sentiments and used them to rally the German people.
Primary sources are the first hand evidence left behind by participants or observers at the time of events. Primary sources originate in the time period that historians are studying. They vary a great deal.
Secondary Source: A Definition. Materials that discuss, explain, interpret, and analyze what the law is or what it. should be, including treatises, law reviews, encyclopedias, ALR annotations, Restatements, and legal newspapers. Secondary sources also provide extensive. citations to primary legal materials and other relevant secondary sources.