Which situation best represents the president acting in the role of commander in chief?
a. negotiating an arms limitation treaty
b. vetoing a law that expands federal spending
c. delivering a speech on the fourth of july
d. ordering a military strike on a foreign target?

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.

agriculture revolution