1. In 1862, the Dakota War of 1862 began in Minnesota, which had a significant impact on South Dakota. The war was fought between the United States and several Sioux tribes, and ended in the execution of 38 Sioux warriors in Mankato, Minnesota.
2. In 1907, the state of South Dakota officially adopted the state flag. The design features the state seal in the center, surrounded by a sunburst pattern and the words "South Dakota" and "The Mount Rushmore State."
3. In 1927, the famous aviator Charles Lindbergh landed his plane, the Spirit of St. Louis, in Pierre, South Dakota, during a nationwide tour following his historic flight across the Atlantic.
4. In 1980, the Crazy Horse Memorial, a massive sculpture dedicated to the Sioux warrior Crazy Horse, was dedicated in the Black Hills of South Dakota. The sculpture is still under construction and is expected to be the largest mountain carving in the world when completed.
5. In 2011, the town of Yankton, South Dakota celebrated its 150th anniversary. Yankton was the first capital of the Dakota Territory and played a significant role in the state's early history, serving as a major transportation hub and center of commerce.