1. On April 13, 1917, Arizona declared war on Germany, becoming one of the first states in the nation to do so. The state also played a significant role in training soldiers at its military bases during World War I and II.

2. In 1934, on April 13, the iconic Route 66 was officially established. The famous road spanned 2,448 miles from Chicago, Illinois, to Santa Monica, California, and passed through several Arizona towns, including Flagstaff and Kingman.

3. On April 13, 1964, Phoenix native Linda Ronstadt released her debut album, "Hand Sown ... Home Grown." Ronstadt went on to become one of the most successful female musicians of the 20th century, with hits like "You're No Good" and "Blue Bayou."

4. In 1993, on April 13, Phoenix Suns point guard Kevin Johnson set a record for the most consecutive free throws made in a single season, with 44. Johnson was known for his quickness and athleticism and helped lead the Suns to the NBA Finals in 1993.

5. On April 13, 2015, Arizona became the first state in the nation to pass a law allowing businesses to refuse service to customers based on their sexual orientation. The law, known as SB 1062, was widely criticized and ultimately vetoed by Governor Jan Brewer after facing fierce opposition from businesses and civil rights groups.