1. In 1857, Fort Randall was established on the bluffs overlooking the Missouri River in South Dakota. The fort played a significant role in the Indian Wars and served as a cavalry post until it was decommissioned in 1892.

2. On June 2, 1877, a massive tornado struck the town of Yankton, South Dakota. The tornado, which reportedly had a mile-wide path, destroyed dozens of buildings and caused several fatalities.

3. In 1909, South Dakota became the first state to allow women to vote in primary elections. This marked an important step in the suffrage movement and helped pave the way for the passage of the 19th Amendment to the U.S. Constitution in 1920, which granted women the right to vote.

4. On June 2, 1932, the Battle of Castle Butte took place in Harding County, South Dakota. The battle was a clash between law enforcement officials and a group of farmers who were protesting against the foreclosure of their properties during the Great Depression. The farmers were eventually dispersed and several were arrested.

5. In 1969, the Crazy Horse Memorial was dedicated in the Black Hills of South Dakota. The massive monument, which is still under construction, honors the Lakota warrior Crazy Horse and is meant to represent the spirit and culture of Native American peoples.