Britain also extended its control to other areas of the Persian Gulf during the 19th century. Meanwhile, by 1881 Russia had completed its conquest of present-day Turkmenistan and Uzbekistan, bringing Russia's frontier to Iran's northeastern borders and severing historic Iranian ties to the cities of Bukhara and Samarqand. Several trade concessions by the Iranian government put economic affairs largely under British control. By the late 19th century, many Iranians believed that their rulers were beholden to foreign interests.
