1. Arkansas became a state on April 1, 1836: The territory of Arkansas became the 25th state of the United States on April 1, 1836. This date is now celebrated as Arkansas Statehood Day.

2. The Arkansas Traveler first published on April 1, 1880: The Arkansas Traveler was a popular newspaper that began publication on April 1, 1880. It chronicled the state's history, politics, and culture, and became an important source of information for Arkansans.

3. Eureka Springs declared a "Natural Health Spa" on April 1, 1906: The historic town of Eureka Springs was declared a "Natural Health Spa" on April 1, 1906. The town's hot springs were believed to have healing properties, and the designation helped attract tourists seeking health and wellness.

4. Little Rock Central High School integrated on April 1, 1957: On April 1, 1957, nine African American students attempted to integrate Little Rock Central High School in what became known as the "Little Rock Nine" crisis. Arkansas Governor Orval Faubus initially opposed the integration, but federal troops were eventually sent in to enforce it.

5. Hot Springs National Park established on April 20, 1832: Although not strictly an April 1 event, Hot Springs National Park was established by an act of Congress on April 20, 1832. The park is home to 47 hot springs and has been a popular tourist destination for over a century.