WORLD CIVILIZATION

Detailed explanation-1: -Ancient Iran, historically known as Persia, was the dominant nation of western Asia for over twelve centuries, with three successive native dynasties-the Achaemenid, the Parthian, and the Sasanian-controlling an empire of unprecedented size and complexity.

Detailed explanation-2: -Persia is today the country of Iran. By the 5th century B.C.E., it was the largest empire the world had ever seen, surpassing the size of their Assyrian predecessors.

Detailed explanation-3: -On the day of the Persian New Year, March 21 1935, Reza Shah Pahlavi, requested foreign delegates to use the term Iran, instead of Persia, in a conscious reference to the ancient ancestry of the Iranians.

Detailed explanation-4: -For most of history, the tract of land now called Iran was known as Persia. It wasn’t until 1935 that it adopted its present name.