1. On November 22, 1911, Arizona celebrated its first statehood anniversary. The state had officially joined the United States the previous year, on February 14, 1912, becoming the 48th state.

2. In 1935, the Hoover Dam was completed, marking a major milestone in the history of Arizona and the United States. The dam, located on the Colorado River, provides hydroelectric power, controls flooding, and creates Lake Mead, one of the largest man-made reservoirs in the world.

3. On November 22, 1963, Arizona was visited by tragedy when President John F. Kennedy was assassinated in Dallas, Texas. The event shocked the nation and was felt deeply in Arizona and across the country.

4. In 2009, NASA's Lunar Reconnaissance Orbiter launched from the Kennedy Space Center, carrying cameras and instruments designed to study the moon's surface. The mission, which included scientists from the University of Arizona, helped advance our understanding of the moon and its history.

5. In 2012, Arizona Governor Jan Brewer announced the opening of a new $165 million facility for Caterpillar, one of the world's largest manufacturers of construction and mining equipment. The state-of-the-art factory, located in Tucson, was expected to create more than 600 jobs and have a significant economic impact on the region.