1. In 1936, the Navajo Nation Council was established. It is the governing body of the largest tribe in the United States and is responsible for making laws, appointing officials, and managing the tribe's affairs.

2. On June 10, 1985, Arizona Governor Bruce Babbitt signed legislation allowing tribal gaming on reservations. This decision led to the development of a multi-billion dollar industry that has had a significant impact on both the state and tribal economies.

3. In 1957, Arizona State University's football team defeated the University of Iowa in the first-ever Sun Bowl held in El Paso, Texas. The Sun Bowl is now an annual college football game played in late December or early January.

4. On June 10, 1922, the Kofa National Wildlife Refuge was established. Located in southwestern Arizona, the refuge covers over 660,000 acres and provides habitat for a variety of wildlife, including desert bighorn sheep, mountain lions, and coyotes.

5. In 1971, Arizona Senator Barry Goldwater introduced legislation that created the Grand Canyon National Park Enlargement Act. This law expanded the Grand Canyon National Park by over 400,000 acres, adding significant portions of the Canyon's rim and plateau to the protected area.