Category: Albuquerque & New Mexico

In November 1835, the northern part of the Mexican state of Coahuila-Tejas declared itself in revolt against Mexico’s new centralist government headed by President Antonio López de Santa Anna. By February 1836, Texans declared their territory to be independent and that its border extended to the Rio Grande rather than the Rio Nueces that Mexicans recognized as the dividing line. Although the Texans proclaimed themselves citizens of the Independent Republic of Texas on April 21, 1836 following their victory over the Mexicans at the Battle of San Jacinto, Mexicans continued to consider Tejas a rebellious province that they would reconquer someday.

In December 1845, the U.S. Congress voted to annex the Texas Republic and soon sent troops led by General Zachary Taylor to the Rio Grande (regarded by Mexicans as their territory) to protect its border with Mexico. The inevitable clashes between Mexican troops and U.S. forces provided the rationale for a Congressional declaration of war on May 13, 1846.

Hostilities continued for the next two years as General Taylor led his troops through to Monterrey, and General Stephen Kearny and his men went to New Mexico, Chihuahua, and California. But it was General Winfield Scott and his army that delivered the decisive blows as they marched from Veracruz to Puebla and finally captured Mexico City itself in August 1847.

Mexican officials and Nicholas Trist, President Polk’s representative, began discussions for a peace treaty that August. On February 2, 1848 the Treaty was signed in Guadalupe Hidalgo, a city north of the capital where the Mexican government had fled as U.S. troops advanced. Its provisions called for Mexico to cede 55% of its territory (present-day Arizona, California, New Mexico, and parts of Colorado, Nevada and Utah) in exchange for fifteen million dollars in compensation for war-related damage to Mexican property.

Other provisions stipulated the Texas border at the Rio Grande (Article V), protection for the property and civil rights of Mexican nationals living within the new border (Articles VIII and IX), U.S. promise to police its side of the border (Article XI), and compulsory arbitration of future disputes between the two countries (Article XXI). When the U.S. Senate ratified the treaty in March, it deleted Article X guaranteeing the protection of Mexican land grants. Following the Senate’s ratification of the treaty, U.S. troops left Mexico City.

Hispanic Reading Room, Library of Congress

The map used to negotiate the Treaty

Yours truly took up residence in New Mexico on this date in 1999, thereby becoming NewMexiKen.

… was signed in Mexico City on this date in 1853. The treaty settled the dispute over the exact location of the international border west of Texas and gave the U.S. approximately 29,000 square miles of land — in brief, Arizona and New Mexico south of the Gila River — for the price of $10 million. In the U.S. it’s known as the Gadsden Purchase Treaty.

The Mexican Republic agrees to designate the following as her true limits with the United States for the future: retaining the same dividing line between the two Californias as already defined and established, according to the 5th article of the treaty of Guadalupe Hidalgo, the limits between the two republics shall be as follows: Beginning in the Gulf of Mexico, three leagues from land, opposite the mouth of the Rio Grande, as provided in the 5th article of the treaty of Guadalupe Hidalgo; thence, as defined in the said article, up the middle of that river to the point where the parallel of 31° 47′ north latitude crosses the same; thence due west one hundred miles; thence south to the parallel of 31° 20′ north latitude; thence along the said parallel of 31° 20′ to the 111th meridian of longitude west of Greenwich; thence in a straight line to a point on the Colorado River twenty English miles below the junction of the Gila and Colorado rivers; thence up the middle of the said river Colorado until it intersects the present line between the United States and Mexico.

Read the entire Gadsden Purchase Treaty.