Answer:
Soldiers were organized into highly efficient legions
Explanation:
The Roman military were known to be the largest fighting force in ancient history, the main reason they became so powerful was because of the strength of its military legions.
The expansion of the military contributed to the growth and economic development of the roman empire by bringing the loots and conquered people back to Rome, this in turn contributed to the development of the Roman empire and the Roman culture.
Roman military also had other important roles that they contributed to the Roman empire, asides the construction of the military structures, they also constructed roads, bridges, ships, water channels and canals, all these contributed to the early economic development which helped in the longevity of the Roman empire.
