1. In 1834, the Arkansas Cherokee signed a treaty with the U.S. government setting terms for their removal to Indian Territory. This treaty would result in the forced removal of thousands of Native Americans from their ancestral land, later known as the Trail of Tears.

2. On July 21, 1861, Confederate forces under General Benjamin McCulloch defeated Union troops in the Battle of Wilson's Creek in Missouri. This battle was significant for Arkansas as it led to increased Confederate control of the region.

3. In 1904, the first Ozark Folk Festival was held in Eureka Springs, Arkansas. This festival would become an annual event, celebrating the music, crafts, and customs of the Ozark region.

4. On July 21, 1912, the first Corn Club in the United States was established in Conway County, Arkansas. The Corn Clubs, later known as 4-H, were aimed at teaching young people agricultural skills and fostering a sense of community.

5. In 1996, the Arkansas River Flood devastated much of the state, causing over $500 million in damages and claiming 14 lives. The disaster led to improvements in flood control infrastructure and emergency response systems throughout the region.