1. Arkansas became a state: On July 1, 1836, Arkansas officially became the 25th state in the United States.

2. Civil War Battle: During the Civil War, on July 1, 1862, Union troops fought Confederate troops in the Battle of Hill's Plantation in Arkansas. This battle was part of the larger campaign to gain control of the Mississippi River.

3. State Parks Established: On July 1, 1923, Arkansas established its first state park, Petit Jean State Park. This park covers over 3,000 acres and is named after a legendary woman who disguised herself as a man to accompany her fiancé on a journey to explore the west.

4. Segregation Ends: On July 1, 1965, the Civil Rights Act was enacted, ending racial segregation in public accommodations and schools in Arkansas.

5. National Park Created: On July 1, 1972, the Buffalo National River was established as the first national river in the United States. The park encompasses over 95,000 acres in northern Arkansas and is known for its scenic beauty and recreational opportunities such as fishing, canoeing, and hiking.