1. In 1912, Arizona became the 48th state of the United States of America. After achieving statehood, Arizona became a hub for mining, agriculture, and tourism.

2. In 1929, the world-famous Grand Canyon National Park was established. The park attracts millions of visitors each year who come to marvel at its stunning natural beauty and unique landscape.

3. In 1959, the city of Phoenix hosted its first ever professional football game at Sun Devil Stadium. The Arizona Cardinals (known then as the Chicago Cardinals) played against the New York Giants and won, 26-14. Today, the Cardinals play at State Farm Stadium in Glendale, Arizona.

4. In 1993, the NBA All-Star Game was hosted by the city of Phoenix. The game was held at the Phoenix Suns' home arena, the America West Arena (now Talking Stick Resort Arena). The West team won the game with a final score of 135-132.

5. In 2009, the historic Biosphere 2 research facility in Oracle, Arizona was officially transferred to the University of Arizona. The dome-shaped structure was built in the 1980s as an experiment in self-sustaining ecosystems and housed eight people for two years in the early 1990s. Today, Biosphere 2 continues to serve as a research center for scientists studying ecology, climate change, and sustainability.