What were two reasons for success in expanding its power across Italy?

1. The Roman Republic had a strong and well-organized military. The Roman army was one of the most powerful and disciplined armies in the ancient world. Roman soldiers were well-trained and equipped, and they were led by experienced generals.

2. The Roman Republic had a talent for diplomacy and negotiation. The Romans were often able to form alliances with other Italian tribes and cities. These alliances helped the Romans to expand their territory and influence without having to fight major wars.