Which event marked the beginning of the Roman Empire?
Julius Caesar was named king.
A devastating earthquake united the Roman people.
Caesar Augustus defeated his enemies, ending the civil war.
A foreign trade group influenced Caesar Augustus.

C : Caesar Augustus defeated his enemies, ending the civil war

Explanation:

took the test

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.

i believe the answer to your question is b. pay your bills early