1. In 1941, the U.S. Army established the Pine Bluff Arsenal near Pine Bluff, Arkansas. The arsenal is a major manufacturer of chemical weapons and supplies ammunition to the U.S. military.

2. On June 5, 1958, the Supreme Court of Arkansas declared the state's "Massive Resistance" laws unconstitutional. These laws were designed to prevent the integration of public schools in the state.

3. In 1964, civil rights leader Malcolm X visited Little Rock, Arkansas and gave a speech at Philander Smith College. His visit was controversial in the state, as many residents opposed his message of black empowerment.

4. On June 5, 1983, a tornado outbreak swept through northwest Arkansas, causing significant damage in the cities of Rogers and Bentonville. The tornadoes killed four people and injured dozens more.

5. In 2012, the Crystal Bridges Museum of American Art opened in Bentonville, Arkansas. The museum was founded by Walmart heiress Alice Walton and features works by famous American artists such as Norman Rockwell, Andy Warhol, and Georgia O'Keeffe.