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.
Why Use Primary Sources? Primary sources provide a window into the pastâunfiltered access to the record of artistic, social, scientific and political thought and achievement during the specific period under study, produced by people who lived during that period.