Why did Rome become a republic?

A. The poor formed a rebellion against the aristocrats
B. The established monarchy wasn't powerful enough
C. The king's broad powers allowed him o mistreat his people
D. The aristocrats their power

C. The king's broad powers allowed him to mistreat his people

Rome became a republic because the Roman people were unhappy with the way the monarchy was being run by the kings. The kings had too much power and were able to mistreat the people without consequences. As a result, the Roman aristocrats overthrew the monarchy and established a republic, where power was shared among elected officials.