1. In 1820, the Santa Fe Trail officially opened, becoming a vital trade route between Missouri and Santa Fe, New Mexico. The trail brought goods such as textiles, horses, and guns to New Mexico and was also responsible for the spread of disease to Native American communities.

2. On January 4, 1896, New Mexico's first state governor, William C. McDonald, was inaugurated. He served as governor for two terms and was responsible for introducing legislation aimed at improving education and public health.

3. In 1912, New Mexico became the 47th state of the United States on January 4, after gaining statehood in the midst of the Progressive Era. The state's unique history, culture, and landscape have made it a popular destination for tourists and adventurers.

4. On January 4, 1921, the New Mexico State Normal School, later known as Eastern New Mexico University, was founded in Portales. The school began as a teacher's college and has since expanded to offer a variety of undergraduate and graduate programs.

5. In 1935, the first ski resort in New Mexico, known as Ski Santa Fe, opened on January 4. The resort is located in the Sangre de Cristo Mountains and has since become a popular winter destination for skiing, snowboarding, and other outdoor activities.