Answer:
- wars with the Babylonians and dividing his territory
- unifying a massive Persian Empire and the developed of system using coins
Step-by-step explanation:
Darius the Great was one of the greatest and most efficient emperors of the ancient times. He defeated Babylon after they rebelled against the Persian empire and divided his territory into around 20 provinces to enable better administration.
Darius was responsible for unifying a massive empire like Persia in a time when such a time was very hard to do and his tolerance of the various religions of the empire contributed to the peace that reigned within the empire.