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 vs. Secondary Sources Your instructors may require you to use more primary sources than secondary sources for your research. Discover the identifying characteristics and advantages of primary and secondary (and tertiary) sources with this guide.