The first known empire to establish a postal system was the Persian Empire, founded by Cyrus the Great in the 6th century BCE. The Persian postal system was characterized by a network of roads and way stations, enabling efficient communication across the vast empire. Couriers known as "Angarium" transported messages and official documents, ensuring swift delivery between the central authority and distant provinces. This postal service not only facilitated administration but also enhanced trade and cultural exchange throughout the empire, paving the way for future postal systems in subsequent civilizations.