WORLD CIVILIZATION

Detailed explanation-1: -The Persians were the first people to establish regular routes of communication between three continents-Africa, Asia and Europe. They built many new roads and developed the world’s first postal service.

Detailed explanation-2: -About 2, 300 years ago, the Persian Empire covered over two million square miles and held nearly half the world’s population. Although Alexander the Great may have disagreed, this was the world’s first great empire.

Detailed explanation-3: -The Persians were Iranian people who arrived in what is today Iran c. 1000 BC and settled a region including north-western Iran, the Zagros Mountains and Persis alongside the native Elamites. The Persians were originally nomadic pastoralists in the western Iranian Plateau.