1. On January 22, 1973, the United States Supreme Court issued a historic decision in the case Roe v. Wade, which legalized abortion nationwide. This decision remains controversial and divisive to this day, and has had a significant impact on Arizona's political and social landscape.

2. January 22 is also the anniversary of the establishment of Grand Canyon National Monument in 1908. This eventually led to the establishment of Grand Canyon National Park in 1919, which is one of Arizona's most famous and popular tourist attractions.

3. On January 22, 1964, the city of Scottsdale officially became a city, after previously being a town. At the time, Scottsdale had a population of around 10,000 people, but today it is home to more than 250,000 people and is a major center of tourism and luxury living.

4. In 1875, a group of Apache warriors led by Victorio raided the small town of Camp Grant, located in what is now southern Arizona. The raid resulted in the deaths of around 100 people, mostly women and children. The incident is considered one of the deadliest massacres of Native Americans in Arizona history and was a significant factor in the beginning of the Apache Wars.

5. Finally, on January 22, 1912, Arizona became the 48th state in the United States, after years of effort by local politicians and activists. This event marked a major milestone in Arizona's history and helped to solidify its status as an important and influential state in the American Southwest.