Final answer:
The Persian Empire under King Darius the First was known for connecting its regions with a network of roads and a postal system, known as the Royal Road, to facilitate rapid communication and control over the vast empire. The correct option is B.
Step-by-step explanation:
Under King Darius the First, the Persian Empire is noted for having connected different regions with roads and postal service. King Darius initiated significant administrative reforms across the empire.
The creation of the Royal Road was a crucial development that allowed for swift communication across vast distances, which was vital for maintaining control over the empire. This road stretched from western Anatolia to the Persian capital of Susa, allowing messengers to cover 1,600 miles in a week on horseback.
Darius also standardized laws and currency, and sponsored a standardized cuneiform alphabet to facilitate better communication.
The Persian Empire was divided into twenty Satrapies, each governed by a Satrap, who was advised by a military general and monitored by roaming officials called 'eyes and ears of the king'. These measures helped Darius to consolidate royal power and maintain a stable administration throughout the empire's vast territories. The correct option is B.