1. On June 7, 1836, President Andrew Jackson signed a bill recognizing Arkansas as the 25th state in the USA. This day has henceforth become an important one in Arkansas history.

2. In 1864, the Battle of Old River Lake occurred in Arkansas during the Civil War. This battle featured Union forces against Confederate forces and resulted in a Union victory.

3. On June 7, 1899, the Arkansas State Normal School (now known as the University of Central Arkansas) was founded. This institution is now one of the largest universities in the state.

4. In 1942, the Arkansas Ordnance Plant was established in Jacksonville, Arkansas. This plant produced bombs and other ordnance during World War II and played a significant role in the war effort.

5. June 7, 1968 marked the end of the Little Rock Central High School crisis, which had been ongoing since 1957. In 1968, the Little Rock School District was declared legally integrated by the U.S. Court of Appeals, signifying an important milestone in the nation's history of civil rights.