WORLD CIVILIZATION

Detailed explanation-1: -The term Persia was used for centuries and originated from a region of southern Iran formerly known as Persis, alternatively as Pārs or Parsa, modern Fārs. The use of the name was gradually extended by the ancient Greeks and other peoples to apply to the whole Iranian plateau.

Detailed explanation-2: -The Islamic Republic of Iran began with the Iranian Revolution. The first major demonstrations to overthrow Shah Mohammad Reza Pahlavi began in January 1978. The new theocratic Constitution-whereby Khomeini became Supreme Leader of the country-was approved in December 1979.