Basra or Basrah is a port city in southern Iraq. It is the capital of the eponymous Basra Governorate, as well as the third largest city in Iraq overall, behind Baghdad and Mosul. Located near the Iran–Iraq border, the city is situated along the banks of the Shatt al-Arab that empties into the Persian Gulf. It is consistently one of the hottest cities in Iraq, with summer temperatures regularly exceeding 50 °C (122 °F).
Built in 636 as a military camp, Basra played an important role as a regional hub of knowledge, trade and commerce during the Islamic Golden Age and is home to the first mosque built outside the Arabian Peninsula. It was a center of the slave trade in Mesopotamia, until the Zanj rebellion in 871.