How did the Roman Republic become a dictatorship?
General Sulla was declared leader after a long civil war.
The patricians and senators were defeated by General Sulla
General Sulla challenged and defeated his opponent in an election.
The plebeians supported General Sulla's overthrow of the government

I believe that it is A but I'm not sure.

Explanation:

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.