1. Missouri became a state on December 6, 1821. This day marks an important milestone in Missouri history as it officially became the 24th state of the United States. In commemoration of this historic event, the Missouri State Capitol holds an annual celebration known as Statehood Day each year on December 6th.

2. The St. Louis Symphony Orchestra held its first performance on December 6, 1880. The orchestra has since become one of the finest in the country and has won numerous Grammy Awards. It is a source of pride for the state of Missouri and is enjoyed by music lovers from all over the world.

3. The iconic Gateway Arch, which stands at 630 feet tall, was completed on December 6, 1965. This architectural masterpiece is a symbol of St. Louis and attracts millions of visitors each year. It is the tallest monument in the United States and has been designated as a National Historic Landmark.

4. Walter Cronkite, the famous news anchor, was born in St. Joseph, Missouri on December 6, 1916. Cronkite was known for his trustworthiness and became known as "The Most Trusted Man in America." He is a legend in the world of journalism and has left a lasting impact on the industry.

5. The Kansas City Chiefs, a professional football team, played in their first game on December 6, 1960. The Chiefs have since won two Super Bowls and have become one of the most successful football franchises in history. They are a source of pride for the state of Missouri and are beloved by sports fans across the nation.