1. In 1792, Kentucky was admitted to the Union as the 15th state. This event marked an important milestone in the history of the state, which had previously been a part of Virginia.

2. In 1968, Senator Robert F. Kennedy was assassinated at the Ambassador Hotel in Los Angeles, California on the night of June 5th. Kennedy had won the Democratic presidential primaries in Oregon and California earlier that day and was considered a leading candidate for the presidency.

3. In 1862, the Battle of Memphis took place during the American Civil War. Union forces under the command of David G. Farragut successfully engaged and defeated Confederate naval forces on the Mississippi River, helping to secure Union control of the river.

4. In 1933, the first Kentucky State Fair was held in Louisville. The event drew hundreds of thousands of visitors and featured exhibits on agriculture, industry, and entertainment.

5. In 1917, Mary Breckinridge founded the Frontier Nursing Service in Leslie County, Kentucky. The organization provided healthcare services to rural communities and helped to improve maternal and infant health outcomes in the region. Today, the Frontier Nursing University carries on the legacy of Mary Breckinridge and her pioneering work in rural healthcare.