WORLD RELIGIONS

Detailed explanation-1: -Partly as a response to the initial challenges that he faced, Darius reorganized the empire by dividing it into satrapies, or provinces. For each satrapy, Darius appointed a satrap-a political governor-and a military commander.

Detailed explanation-2: -Crowned head of Darius I at Behistun., the Royal Road was protected by Persian rulers and later used by the Romans. On this road couriers, riding in relays, could travel 1, 677 miles (2, 699 km) in seven or nine days.

Detailed explanation-3: -Founded by Darius I in 518 B.C., Persepolis was the capital of the Achaemenid Empire. It was built on an immense half-artificial, half-natural terrace, where the king of kings created an impressive palace complex inspired by Mesopotamian models.

Detailed explanation-4: -Darius built the road to facilitate rapid communication on the western part of his large empire from Susa to Sardis. Mounted couriers of the Angarium were supposed to travel 1, 677 miles (2, 699 km) from Susa to Sardis in nine days; the journey took ninety days on foot.