Colonized by Spain, the land that is now New Mexico became US territory as part of the Gadsen Purchase in 1853, though New Mexico did not become a U.S. state until 1912.
1536 - Cabeza de Vaca, Estevan the Moor and two others reach Culiacdn, Mexico, after possibly crossing what is now southern New Mexico, and begin rumors of the Seven Cities of Cibola.
1539 - Fray Marcos de Niza and Estevan lead expedition to find Cibola and reach the Zuni village of Hawikuh, where Estevan is killed.
1540-42 - Francisco Vasquez de Coronado explores area from Gulf of California to present-day Kansas, discovers the Grand Canyon.
1580-81 - Fray Agustin Rodriguez leads expedition to New Mexico; four members of the party killed by Indians.
1582-83 - Fray Bernadino Beltran and Fray Antonio de Espejo lead expedition to New Mexico to search for survivors of the ill-fated Rodriguez mission.
1598 - Juan de Onate establishes the first Spanish capital of San Juan de los Caballeros at the Tewa village of Ohke north of present-day Espanola
1599 -
1600 - San Gabriel, second capital of New Mexico, is founded at the confluence of the Rio Grande and the Chama River.
1601 -
1605 - Onate expedition to the Colorado River; visits El Morro, leaves message on Inscription Rock.
1608 -
1609-10 -
1626 - Spanish Inquisition established in New Mexico.
1641 - Gov. Luis de Rosas assassinated by colonists during conflict between the church and state.
1680 -August 10 - Pueblo Indian Revolt Spanish survivors flee to El Paso del Norte.
Late 1600's - Navajos, Apaches, lies, and Comanches begin raids against Pueblo Indians.
1692-93 -
1695 - Santa Cruz de la Cahada (Canada) founded.
1696 - Second Pueblo Revolt; efforts thwarted by Gov. De Vargas.
1706 - Villa de Albuquerque founded.
1743 - French trappers reach Santa Fe and begin limited trade with the Spanish.
1776 - Franciscan friars Dominguez and Escalante explore route from out New Mexico to California.
1786 - Gov. Juan Bautista de Anza makes peace with the Comanches.
1793 - First school text printed in New Mexico by Padre Antonio Jose Martinez of Taos.
1807 -
1821 -
1828 - First major gold discovery in western U. S. made in Ortiz Mountains south of Santa Fe.
1837 - Chimayo Revolt against Mexican taxation leads to the assassination of Gov. Albino Perez and top officials.
1841 -
1846 -
1847 -
1848 - Treaty of Guadalupe Hidalgo ends Mexican-American War.
1850 - September 9 - New Mexico (which included present-day Arizona, southern Colorado, southern Utah, and southern Nevada) is designated a territory but denied statehood.
1851 - Bishop Jean Baptiste Lamy arrives in New Mexico and establishes schools, hospitals and orphanages throughout the territory
1854 - The Gadsden Purchase front Mexico adds 45,000 square miles to the territory
1861 -
1862 - February 12 - Battles of Velarde de and Glorieta Pass fought, ends confederate occupation of New Mexico.
1863-68 - Known as the "Long Walk," Navajos and Apaches are relocated to Bosque Redondo: finally allowed to return to their homelands after thousands die of disease and starvation.
1863 -
1878 -
1881 - Billy the Kid shot by Sheriff Pat Garrett in Fort Sumner N.M.
1886 - Geronimo surrenders; Indian hostilities cease in the Southwest.
1898 - First movie filmed in New Mexico, Indian Day School by Thomas A. Edison.
1906 - People of New Mexico and Arizona vote on issue of joint statehood, New Mexico voting in favor and Arizona against.
1911 - January 21 -New Mexico Constitution drafted in preparation for statehood.
1912 - January 6 - New Mexico admitted to the Union as the 47th state.
1916 - March 16 - Pancho Villa raids Columbus, N.M.
1920 - Adoption of the l9th Amendment gives women the right to vote.
1922 - Secretary of State Soledad Chacon and Superintendent of Public Instruction Isabel Eckles elected first women to hold statewide office.
1923-24 - Oil is discovered on the Navajo Reservation.
1930-43 -
1942-45 -
1945 - World's first atomic bomb detonated at Trinity Site in southern New Mexico after its development at Los Alamos.
1947 - UFO allegedly crashes between Roswell and Corona, believers claim US government institutes massive coverup of the incident.
1948 - Native Americans will the right to vote in state elections.
195O - Uranium discovered near Grants.
1957 - Buddy Holly records Peggy Sue at Norman Petty Studio in Clovis.
1966 - New state capitol, the "Roundhouse," is dedicated.
1969 - Proposed new state constitution is rejected by voters.
1982 - Space shuttle Columbia lands at White Sands Space Harbor oil Holloman Air Force Base near Alamogordo.
1992 - New Mexico observes Columbus Quincentenary, welcomes Cristobal Colon XX, direct descendent of Christopher Columbus.
1994 - North American Free Trade Agreement (NAFTA) increased trade with Mexico.
1998 - New Mexico celebrates its cuartocentenario, 400th anniversary commemorating its 1598 founding by Juan de Onate.
2000 - Valles Caldera National Preserve established
2005 - 11.65% of state's employment was derived directly or indirectly from military spending
2008 - New Mexico had highest poverty rate in US
2009 - Death penalty abolished
2010 -
2011 - Wildfire forced officials to close Los Alamos National Labratory, voluntary evacuation issued for residents