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.
Primary versus Secondary Sources. Primary Sources. Primary sources are original sources of information that have not yet been filtered through analysis, examination or interpretation. Typically, primary sources are contemporary to the events and individuals being researched. Primary sources differ both in content and format from discipline to discipline.