Hitler in his writings, "Mein Kampf" explains his ambitions for Germany. He would create Germany into a ethno-empire. He would conquer Eastern Europe to create, "lebensraum" (Living Space) for the Aryan Race. The Aryan Race is a ancient civilization that Hitler believes are the ancestors of Germans. He explains the Aryan Race is superior to all others, culturally, technologically, physically, mentally, etc. He also shows his deep hatred for the slavic peoples and Jewish population. Anti-Semitism was common at the time and he used the Jews as a scape goat to rally Germany during the Great Depression.
The industrial revolution was a period of time from the 1700 to the mid 1800 where new ideas and methods greatly improved.
The declaration of independence was a very important document in declaring our independence from Britain. It shaped our country's laws and beliefs today and it formed our new nation. It gave us morals and more rules to follow as well. Hope this helps! :)
Popular sovereignty, or the sovereignty of the peoples' rule, is part of the seven principles, that the authority of a state and its government is created and sustained by the consent of its people, through their elected representatives (Rule by the People), who are the source of all political power.