What do all three documents agree is the most likely reason people's rights will be threatened? Which branch of government does all three documents imply is the source of the people's power?

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

a.   it resulted in widespread unemployment.

i thinl it is the 1st answer