1. Louisiana became a state: On June 14, 1812, Louisiana was officially admitted as the 18th state in the United States. The state's long history began with this event, and Louisiana would go on to become a critical player in the country's development.

2. US Congress approves the Confederate constitution: In 1861, on June 14th, the United States Congress authorized a new constitution for the Confederate States of America. This constitution perpetuated slavery and marked the beginning of a tumultuous time in United States history.

3. Plessy vs Ferguson Supreme Court decision: On June 14, 1892, Homer Plessy was arrested for refusing to leave the "whites only" section of a train in Louisiana. His case eventually made its way to the US Supreme Court, which ruled in Plessy vs Ferguson that segregation was legal as long as the separate facilities were equal. This decision allowed for the rampant segregation of the Jim Crow era.

4. German submarine attacks on Louisiana coast: During World War II, German submarines often targeted the Louisiana coast. On June 14, 1942, a German submarine torpedoed and sank the SS Lilli, a ship transporting crude oil near the mouth of the Mississippi River. This attack was one of many that brought the war much closer to home for residents of Louisiana.

5. Louisiana National Guard helps with Hurricane Katrina: In 2005, Hurricane Katrina devastated the Gulf Coast, and Louisiana bore the brunt of the damage. On June 14th of that year, Governor Kathleen Blanco activated the Louisiana National Guard to help with relief efforts. Over the following months, the National Guard played a critical role in rebuilding and restoring the state.