Which is the best description of the difference between the union and secessionist viewpoints regarding secessionist

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.

they both built pyramids.

small european communities with shared traditions consolidated into large new states (apex)

i believe the correct answer is b.