New Mexico TerritoryW
New Mexico Territory

The Territory of New Mexico was an organized incorporated territory of the United States that existed from September 9, 1850, until January 6, 1912, when the remaining extent of the territory was admitted to the Union as the State of New Mexico, making it the longest-lived organized incorporated territory of the United States, lasting approximately 62 years.

Confederate ArizonaW
Confederate Arizona

Confederate Arizona, officially the Territory of Arizona, and commonly known as the Arizona Territory was an organized incorporated territory of the Confederate States that existed from August 1, 1861, to May 26, 1865, when the Trans-Mississippi Department, commanded by General E. Kirby Smith, surrendered at Shreveport, Louisiana. Effective Confederate control of Arizona Territory, however, ended after the Battle of Glorieta Pass in March 1862.

Santa Fe de Nuevo MéxicoW
Santa Fe de Nuevo México

Santa Fe de Nuevo México was a Kingdom of the Spanish Empire and New Spain, and later a territory of independent Mexico. The first capital was San Juan de los Caballeros from 1598 until 1610, and from 1610 onward the capital was La Villa Real de la Santa Fe de San Francisco de Asís. The name "New Mexico", the capital in Santa Fe, the government building, militia or citizen-soldiers (vecinos), and rule of law were retained when the New Mexico Territory, later the U.S. State of New Mexico, became a part of the United States. The New Mexican citizenry, primarily consisting of Hispano, Pueblo, Navajo, Apache, and Comanche peoples, became citizens of the United States as a result of the Treaty of Guadalupe Hidalgo.

Juan Bautista de AnzaW
Juan Bautista de Anza

Juan Bautista de Anza was born in the Spanish province of New Navarre in Viceroyalty of New Spain. Of Basque descent, he served as an expeditionary leader, military officer, and politician primarily in California and New Mexico under the Spanish Empire. He is credited as one of the founding fathers of Spanish California and served as an official within New Spain as Governor of the Province of New Mexico.

Colfax County WarW
Colfax County War

The Colfax County War was a range war that occurred from 1873 to 1888 between settlers and the new owners of the Maxwell Land Grant in Colfax County, in the U.S. state of New Mexico. The war started when the new landowners tried to remove the local settlers from the land they had just bought. The locals refused to leave, as they had settled much of their livelihood in the grant, which resulted in conflict and violence in 1875.

Fajada GapW
Fajada Gap

The Fajada Gap is a geographical feature in the southwestern portion of Chaco Canyon, which is part of the Chaco Culture National Historical Park located in the U.S. state of New Mexico. Surrounding Fajada Butte, it consists of a conspicuous gap penetrating the Chacra Mesa, which comprises much of the southwestern cliff faces hemming Chaco Canyon. Fajada Gap has historically helped funnel summer and winter thunderstorms and accompanying precipitation into the Chaco Canyon area.

Josiah GreggW
Josiah Gregg

Josiah Gregg was an American merchant, explorer, naturalist, and author of Commerce of the Prairies about the American Southwest and Northern Mexico regions. He collected many previously undescribed plants on his merchant trips and during the Mexican–American War after which he went to California. He reportedly died of a fall from his mount due to starvation near Clear Lake, California, on 25 February 1850 after a cross-country expedition which fixed the location of Humboldt Bay.

Treaty of Guadalupe HidalgoW
Treaty of Guadalupe Hidalgo

The Treaty of Guadalupe Hidalgo, officially titled the Treaty of Peace, Friendship, Limits and Settlement between the United States of America and the Mexican Republic, is the peace treaty signed on February 2, 1848, in the Villa de Guadalupe Hidalgo between the United States and Mexico that ended the Mexican–American War (1846–1848). The treaty was ratified by the United States on March 10 and by Mexico on May 19. The ratifications were exchanged on May 30, and the treaty was proclaimed on July 4, 1848.

Jornada del MuertoW
Jornada del Muerto

The name Jornada del Muerto translates from Spanish as "Single Day's Journey of the Dead Man" or even "Route of the Dead Man, though the modern literal translation is closer to "The Working Day of the Dead". It was the name given by the Spanish conquistadors to the Jornada del Muerto Desert basin, and the particularly dry 100-mile (160 km) stretch of a route through it from Las Cruces to Socorro, New Mexico. The trail led northward from central Spanish colonial New Spain, present-day Mexico, to the farthest reaches of the viceroyalty in northern Nuevo México Province. The route later became a section of the Camino Real de Tierra Adentro.

Mexican–American WarW
Mexican–American War

The Mexican–American War, also known in the United States as the Mexican War and in Mexico as the Intervención Estadounidense en México, was an armed conflict between the United States and Mexico from 1846 to 1848. It followed the 1845 U.S. annexation of Texas, which Mexico still considered Mexican territory since the government did not recognize the Velasco treaty signed by Mexican General Antonio López de Santa Anna when he was a prisoner of the Texian Army during the 1836 Texas Revolution. The Republic of Texas was de facto an independent country, but most of its citizens wished to be annexed by the United States. Domestic sectional politics in the U.S. were preventing annexation since Texas would have been a slave state, upsetting the balance of power between northern free states and southern slave states. In the 1844 United States presidential election, Democrat James K. Polk was elected on a platform of expanding U.S. territory in Oregon and Texas. Polk advocated expansion by either peaceful means or by armed force, with the 1845 annexation of Texas as furthering that goal. For Mexico, this was a provocation, but Polk went further, sending U.S. Army troops to the area; he also sent a diplomatic mission to Mexico to try to negotiate the sale of territory. U.S. troops' presence was provocative and designed to lure Mexico into starting the conflict, putting the onus on Mexico and allowing Polk to argue to Congress that a declaration of war should be issued. Mexican forces attacked U.S. forces, and the United States Congress declared war.

New SpainW
New Spain

The Viceroyalty of New Spain was an integral territorial entity of the Spanish Empire, established by Habsburg Spain during the Spanish colonization of the Americas. It covered a huge area that included much of North America, northern parts of South America and several Pacific Ocean archipelagos, namely Philippines and Guam. It originated in 1521 after the fall of Tenochtitlan, the main event of the Spanish conquest, and officially created on 18 August 1521 as a kingdom, the first of four viceroyalties Spain created in the Americas. Its first viceroy was Antonio de Mendoza y Pacheco, and the capital of the kingdom was Mexico City, established on the ancient Tenochtitlan.

Northern Rio Grande National Heritage AreaW
Northern Rio Grande National Heritage Area

Northern Rio Grande National Heritage Area is a federally designated National Heritage Area in the U.S. state of New Mexico. The national heritage area includes a section of the upper Rio Grande Valley that has been inhabited by the Puebloan peoples since the early Pre-Columbian era.

Juan de OñateW
Juan de Oñate

Juan de Oñate y Salazar was a Spanish conquistador from New Spain, explorer, and colonial governor of the province of Santa Fe de Nuevo México in the viceroyalty of New Spain. He led early Spanish expeditions to the Great Plains and Lower Colorado River Valley, encountering numerous indigenous tribes in their homelands there. Oñate founded settlements in the province, now in the Southwestern United States. A monument in Alcalde, New Mexico was removed on June 15, 2020.

Pueblo BonitoW
Pueblo Bonito

Pueblo Bonito is the largest and best-known great house in Chaco Culture National Historical Park, northern New Mexico. It was built by the Ancestral Puebloans who occupied the structure between AD 828 and 1126.

Santa Ana County, New Mexico TerritoryW
Santa Ana County, New Mexico Territory

Santa Ana County was one of the seven original partidos created in New Mexico under Mexican rule. Under U.S. rule, it became a U.S. Territorial county from 1852 until 1876, when it was absorbed by Bernalillo County. It does not exist today as an administrative unit. The original county seat of Santa Ana County is what is now Fort Defiance, Arizona. The county was named after the Pueblo of Santa Ana.

Texan Santa Fe ExpeditionW
Texan Santa Fe Expedition

The Texan Santa Fe Expedition was a commercial and military expedition to secure the Republic of Texas's claims to parts of Northern New Mexico for Texas in 1841. The expedition was unofficially initiated by the then President of Texas, Mirabeau B. Lamar, in an attempt to gain control over the lucrative Santa Fe Trail and further develop the trade links between Texas and New Mexico. The initiative was a major component of Lamar's ambitious plan to turn the fledgling republic into a continental power, which the President believed had to be achieved as quickly as possible to stave off the growing movement demanding the annexation of Texas to the United States. Lamar's administration had already started courting the New Mexicans, sending out a commissioner in 1840, and many Texans thought that they might be favorable to the idea of joining the Republic of Texas.

Silvestre Vélez de EscalanteW
Silvestre Vélez de Escalante

Silvestre Vélez de Escalante was a Franciscan missionary and explorer of the Southwest United States during the late 18th century. He is known for his journal, in which he described the expeditions he went on. These included a failed overland expedition in 1776.

Taos RevoltW
Taos Revolt

The Taos Revolt was a popular insurrection in January 1847 by Mexican and Pueblo allies against the United States' occupation of present-day northern New Mexico during the Mexican–American War. In two short campaigns, United States troops and militia crushed the rebellion of the allied Mexican and Pueblo people. The rebels, seeking better representation, regrouped and fought three more engagements, but after being defeated, they abandoned open warfare. While US troops were overwhelmingly victorious, it did result in the New Mexico Territory forming with proper representation and recognition for Santa Fe de Nuevo México's citizenry in the Treaty of Guadalupe Hidalgo.

Territorial evolution of New MexicoW
Territorial evolution of New Mexico

The following timeline traces the territorial evolution of the U.S. State of New Mexico.

Trail of the Ancients Scenic Byway (New Mexico)W
Trail of the Ancients Scenic Byway (New Mexico)

The Trail of the Ancients is a New Mexico Scenic Byway to prehistoric archaeological and geological sites of northwestern New Mexico. It provides insight into the lives of the Ancestral Puebloans and the Navajo, Ute, and Apache peoples. Geological features include canyons, volcanic rock features, and sandstone buttes. Several of the sites are scenic and wilderness areas with recreational opportunities.

U.S. provisional government of New MexicoW
U.S. provisional government of New Mexico

Under the provisions of the Kearny Code as promulgated in 1846, the first legislature of New Mexico commenced its session on December 6, 1847. The Council consisted of seven members, with Antonio Sandoval, of Bernalillo County, as president, and the House of twenty-one members, with W.Z. Angney as speaker.