Dominican Republic landed on the island on December 5, 1492, which the native Taíno people had inhabited since the 7th century. The colony of Santo Domingo became the site of the first permanent European settlement in the Americas, the oldest continuously inhabited city, and the first seat of the Spanish colonial rule in the New World. After more than three hundred years of Spanish rule the Dominican people declared independence in November 1821. The leader of the independence movement José Núñez de Cáceres, intended the Dominican nation to unite with the country of Gran Colombia, but no longer under Spain's custody the
Mexican–American War could not be released from its obligations. The US was released from all obligations of Article XI five years later by Article II of the Gadsden Purchase of 1853. The 1848 Treaty of Guadalupe Hidalgo ended the war and enforced the Mexican Cession of the northern territories of Alta California and Santa Fe de Nuevo México to the United States. Mexico acknowledged the loss of what became the State of Texas and accepted the Rio Grande as its northern border with the U.S. The losses amounted to one-third of its original territory from its 1821 independence. Before the secession of