It established 20 provinces each under a Persian governors who were responsible to the king and his council.
The governing system of the Persian Empire, resting on traditional local government, provincial government and central imperial government.
He consolidated local government, established Persian provincial governors in 20 provinces to oversee and protect them, and controlled them by himself and his council.
He built the Royal Roads
He reorganized the government. He split the empire into two provinces called satrapies which were run by an official called a satrap.
They divided it into 20 provinces (satrapies) with a Persian provincial governor (Satrap) in control supervised by the king and his council.
There were 20 provincial governors responsible for internal and external security, taxes, development, overseen by the king and council. Traditional government - city-state, tribal, principalities continued to carry out local government.
He reorganized the government. He split the empire into two provinces called satrapies which were run by an official called a satrap.
Pony express
It was so extensive, of many peoples each with different customs.
A strong and efficient government.
He divide the Persian Empire into provinces each headed by a governor called a "satrap." To encourage unity he hundreds of miles of roads built or repaired. It made it easier to communicate with different parts of the empire.
The Royal Road or Achmaenid Road with its system of way stations and riders aided communication in Darius' empire. The road connected Susa with Persepolis and India.https://www.thoughtco.com/royal-road-of-the-achaemenids-172590