1. On March 12, 1884, the Society for the Protection of Indian Women and Children was founded in Santa Fe, New Mexico. The organization aimed to protect Native American women and children from abuse and exploitation by non-Native people.

2. The New Mexico State Penitentiary riot occurred on March 12, 1980, in Santa Fe, resulting in the deaths of 33 people and the injuring of many others. The riot was one of the worst in U.S. history and led to major reforms in the state's prison system.

3. On March 12, 1870, Navajo Chief Manuelito signed the Treaty of Bosque Redondo, which provided for the release of Navajo prisoners of war and the return of the Navajo to their homeland in the Four Corners area of New Mexico, Arizona, Utah, and Colorado.

4. The New Mexico Centennial Celebration took place on March 12, 2012, marking the 100th anniversary of New Mexico's statehood. Festivities included parades, concerts, and cultural events throughout the state.

5. On March 12, 1923, the El Paso and Southwestern Railroad completed construction of a major rail line between El Paso, Texas, and Douglas, Arizona, with a connecting branch to Santa Rita, New Mexico. The rail line played a significant role in the development of mining and agriculture in southern New Mexico and throughout the region.