Belzec, Sobibor, and Treblinka were all extermination camps set up by German forces to kill Jewish individuals. Auschwitz was the most deadly of the camps, but Belzec, Sobibor, and Treblinka were very deadly as well. The Schutzstaffel, also known as SS, were German guards who primarily ran these camps, and were followers of Adolf Hitler and members of the Nazi Party. The SS did terrible actions and many Jews were forced into gas chambers to die.
Answer: In composing the declaration, Jefferson followed the format of the English Declaration of Rights, written after the Glorious Revolution of 1689. Most scholars today believe that Jefferson derived the most famous ideas in the Declaration of Independence from the writings of English philosopher John Locke.