How Did the Romans Become so Powerful?

The Romans became powerful after Rome changed from a monarchy to a republic. As a monarchy, the city-state was unable to prevent foreign rulers from assuming power.

After Rome became a republic, its people made strategic treaties with some nations and broke existing treaties with others. This helped Rome form alliances that helped its people conquer other city-states. During this period, Romans started using new weapons and battle tactics, giving them the opportunity to become a powerhouse in Italy.