1. Battle of Carthage: On July 14, 1861, the Battle of Carthage was fought during the early stages of the American Civil War. The Confederate States Army, led by General Sterling Price, clashed with the Union Army, led by Colonel Franz Sigel, in Carthage, Missouri. The Confederates emerged victorious, marking a significant early victory for their cause.

2. Harry S. Truman's Birthday: July 14 is the birthday of former U.S. President Harry S. Truman, who was born in Lamar, Missouri in 1884. Truman served as the 33rd President of the United States from 1945 until 1953, and during his tenure, he oversaw key events such as the end of World War II, the Marshall Plan, and the Korean War.

3. Joplin Tornado: On July 14, 2010, a devastating tornado tore through the city of Joplin, Missouri, causing significant damage and loss of life. The EF5 tornado, which was 1 mile wide at its peak, killed 158 people and injured over 1,000, making it the deadliest tornado to strike the United States since 1947.

4. Missouri Statehood: July 14, 1820, marked a key milestone in Missouri's history, as the state's constitution was adopted, paving the way for Missouri to become the 24th state in the United States the following year. Missouri's journey to statehood was contentious, as it was the first state to be admitted to the Union in the wake of the Missouri Compromise, which attempted to balance the number of free and slave states.

5. Gateway Arch Completion: On July 14, 1965, the Gateway Arch in St. Louis, Missouri, was completed after four years of construction. The arch, which is 630 feet tall and 630 feet wide, is the tallest monument in the United States and serves as a symbol of St. Louis and its role as the "gateway to the West."