Mexican War of Independence
The Mexican War of Independence () was an armed conflict, and the culmination of a political and social process which ended the rule of Spain in 1821 in the territory of New Spain. The war had its antecedent in Napoleon's French invasion of Spain in 1808; it extended from the Cry of Dolores by Father Miguel Hidalgo y Costilla on September 16, 1810, to the entrance of the Army of the Three Guarantees led by Agustín de Iturbide to Mexico City on September 27, 1821. September 16 is celebrated as Mexican Independence Day.
Latin America–United Kingdom relations
After Mexico declared its independence in 1810, Britain was the first European "great power" to recognize Mexican sovereignty. Soon afterwards, Emperor Agustín de Iturbide sent a diplomatic envoy to London to establish diplomatic communications between the two nations. In 1837, Mexico signed a treaty with Britain to abolish the slave trade. The British established a network of merchant houses in the major cities. However, according to Hilarie J. Heath, the results were bleak: