The country today known as Iraq was a region of the Ottoman Empire until the partition of the Ottoman Empire in the 20th century. It was made up of three provinces, called vilayets in the Ottoman language: Mosul Vilayet, Baghdad Vilayet, and Basra Vilayet. These three provinces were joined into one Kingdom by the British after the region became a League of Nations mandate, administered under British control, with the name "State of Iraq". A fourth province (Zor Sanjak), which Iraqi nationalists considered part of Upper Mesopotamia was ultimately added to Syria. In line with their "Sharifian Solution" policy, the British established the Hashemite king, Faisal I of Iraq, who had been forced out of Syria by the French, as their client ruler. Likewise, British authorities selected Sunni Arab elites from the region for appointments to government and ministry offices.