Who came up with the idea of popular sovereignty and what did that concept mean?

Benjamin Franklin expressed his idea of sovereignty. Sovereignty is the principle that the authority of a state and its government are 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.

Explanation:

Lewis Cass of Michigan, who was a Democratic candidate for President in the election of 1848, coined the term "popular sovereignty." The idea of" popular sovereignty" was whether or not slavery would exist there.

Explanation:

Lewis Cass came up with the term and the idea was about slavery.

I hope this helps let me know if im right :D

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explanation:

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.