 No major battles of the Mexican Revolution were fought in the state, though there were skirmishes and attacks on the port.By 1914 rebel Cándido Agular occupied a number of municipalities in the state and in 1917, Venustiano Carranza transferred the federal government here temporarily.On April 21, 1914 an incident involving U.S. sailors in Tampico led President Woodrow Wilson to land American troops in Veracruz, where they remained for six months.