Iran in world history

A convergence of land and language (3500-550 BCE)

Iran and the Greeks (550-247 BCE)

Parthians, Sasanians, and Sogdians (247 BCE-651 CE)

The Iranization of Islam (651-1027)

The Turks: empire-builders and champions of Persian culture (1027-1722)

Under Europe's shadow (1722-1925)

Modernization and dictatorship: the Pahlavi years (1925-79)

The Islamic republic of Iran (1979-present).