1. On October 9, 1821, the Mexican War of Independence from Spain officially ended, and Arizona became a part of Mexico.

2. In 1868, the first telegraph line was established in Arizona, connecting Prescott to the rest of the country. This allowed for faster communication between Arizona and the rest of the United States.

3. In 1871, Camp Grant Massacre occurred in Southern Arizona when a group of Apache warriors attacked and killed approximately 100 people, mostly women and children. This tragic event became a significant event in the ongoing conflict between the U.S. government and the Apache people.

4. October 9, 1890, saw the arrival of the first train to Tucson, allowing for faster transportation of people and goods in and out of the city.

5. In 2001, Arizona Governor Jane Hull declared October 9th as John F. Long Day in honor of a prominent real estate developer and philanthropist who made significant contributions to the state's growth and development.