Which nation gained freedom from Turkish control and achieved independence as a mandate of Britain?

The nation that gained freedom from Turkish control and achieved independence as a mandate of Britain is Iraq. Following World War I and the dissolution of the Ottoman Empire, Iraq was placed under British administration. The League of Nations mandated that Iraq be governed by Britain as a means to facilitate its transition to independence. In 1932, Iraq officially gained independence while still maintaining a degree of British influence through various treaties.

Syria, although it gained independence from French control, was not a British mandate but rather a French mandate following the same post-World War I territorial reconfigurations. Iran, on the other hand, was never under Turkish control in the modern sense and had its own historical trajectory toward modernization and independence. Pakistan was formed in 1947 as a result of the partition of British India and is not directly associated with the Turkish Empire or mandates. Thus, Iraq stands out as the only nation from the provided options that fits the criteria of being under Turkish control and later transitioning to independence through British mandate.