City (pop., 2006: 355,338), northwestern Iran. It was founded as Shad Sh
ahp
ur in 250
CE and flourished under Muslim rule in the 7th century.
Genghis Khan laid waste to the city, but it later revived and was made the capital of Persia (1548 – 98) under the
Safavid dynasty. In the late 18th century it became a base for foreign trade with areas of the Caspian Sea, the Persian Gulf, and Anatolia. A coup was launched from Qazv
in in 1921 that led to Iran's consolidation under
Reza Shah Pahlavi. It is a regional communications centre, with some manufacturing.
For more information on Qazvin, visit Britannica.com.