 In 1836 U.S. citizens allowed to live in the Mexican state of Texas revolted against the Mexican government to establish a U.S.-backed Republic of Texas, a country that existed less than 10 years (from May 14, 1836 to December 29, 1845) before it was annexed to the United States of America.However, in August 1837, Memucan Hunt, Jr., the Texan minister to the United States, submitted the first official annexation proposal to the Van Buren administration (the first American-led attempts to take over Mexican Texas by filibustering date back to 1819 and by separatist settlers since 1826).In 1896 Britain established a state in Zanzibar.