1. The Pueblo Revolt of 1680 began on August 9, as Native American tribes, led by Popé, rose up against Spanish colonizers in present-day New Mexico. While the conflict did not occur in Colorado, it had significant impacts on the region's history as it forced the Spanish to retreat from their northern territories.

2. On August 9, 1858, senator Henry M. Teller delivered a speech to the U.S. Senate advocating for the creation of Colorado Territory. His efforts were successful, and Colorado became an official territory less than a year later on February 28, 1861.

3. Colorado's first national park, Rocky Mountain National Park, was established on August 9, 1916, by President Woodrow Wilson. The park covers over 265,000 acres and attracts millions of visitors each year with its stunning scenery and diverse wildlife.

4. On August 9, 1955, the Colorado State Capitol building was designated as a National Historic Landmark. The building, located in Denver, was completed in 1894 and features a distinctive gold dome that was added in 1908.

5. In 2019, an 18-year-old woman named Sol Pais committed suicide after traveling to Colorado and expressing a fascination with the 1999 Columbine High School shooting. Her actions prompted a public safety alert and the closure of several schools in the Denver area on August 9. While tragic, the incident underscores the ongoing impact of the Columbine tragedy on Colorado's history and culture.