1. On November 30, 1918, the state of South Dakota ratified the 18th Amendment, which prohibited the manufacture, sale, and transportation of alcoholic beverages. Although the state government initially supported Prohibition, smuggling and bootlegging became rampant, leading to its repeal in 1933.

2. On November 30, 1934, famed outlaw Charles "Pretty Boy" Floyd was killed by FBI agents in East Liverpool, Ohio. Floyd had committed a series of bank robberies and other crimes throughout the Midwest, and was believed to have fled to South Dakota at one point.

3. The Buffalo Roundup, one of South Dakota's most iconic events, takes place every September, but November 30 marks the end of the official buffalo hunting season in the state. Following the roundup, buffalo are sorted and sold, and some are culled from the herd to keep the population in check.

4. On November 30, 1976, the successful energy company Black Hills Corporation was incorporated in Rapid City, South Dakota. The company provides power and gas services to millions of customers across the western United States.

5. In recent years, November 30 has become associated with Small Business Saturday, a national shopping holiday that encourages consumers to support local, independent businesses. South Dakota is home to many such businesses, from family-owned restaurants and shops to innovative startups in fields like tech and renewable energy.