1. The military might of the Legions as a deterrent to foreign invasion and as a force in supressing internal rebellion.
2. The incorporation of the native peoples into the Legions and the workings of the Roman empire as auxilaries and burecrats.
3. The growth of the Roman infrastructure network, such as roads, aquaducts, and forums which increased the trade within the empire and increased the standard of living for the conquered peoples
4. fall of the replubic
i got it online but i was also using some of my knowledge cuz i learned this before but i can think if anymore
