1. Colorado became a state on January 25, 1876. Originally part of the Kansas and Nebraska territories, Colorado's residents pushed for statehood in the mid-19th century. After a lengthy process, President Ulysses S. Grant signed the bill making Colorado the 38th state in the nation.

2. The Colorado Silver Boom began on January 25, 1879, when silver was discovered in Leadville. This led to a rush of prospectors and miners to the area, boosting the state's economy and contributing to a population boom.

3. The National Western Stock Show in Denver started on January 25, 1906. This annual event showcases Colorado's livestock industry and includes rodeos, horse shows, and other activities.

4. On January 25, 1927, the United States' largest cave system was discovered in Glenwood Springs. The Glenwood Caverns and Historic Fairy Caves attract tourists from around the world to explore their breathtaking formations.

5. The first woman to be elected to a state legislature in the United States took office on January 25, 1895, in Colorado. Representative Clara Cressingham broke barriers by being the first woman to serve in the Colorado House of Representatives and paved the way for future female elected officials.