1. In 1902, the South Dakota governor signed a bill designating the state flower as the American Pasqueflower. This wildflower can be found blooming on the prairies and badlands of South Dakota in early spring, often around March 25th.

2. On March 25, 1936, the Norris-Cotton Federal Building was completed in downtown Rapid City. Named after two senators from neighboring states, the building served as a post office and courthouse before becoming a federal office building.

3. In 1971, the Oglala Sioux Tribal Council declared a state of emergency on the Pine Ridge Indian Reservation due to rampant poverty and unemployment. This led to the formation of the American Indian Movement (AIM), which held their first convention in Rapid City on March 25th of that year.

4. March 25, 1979, was a historic day in the history of South Dakota's mountaineering community. That day, Bill Briggs became the first person to ski down the Grand Teton in Wyoming, a feat that had been attempted for decades.

5. In 2006, the South Dakota legislature voted to establish a new state holiday called "Native American Day". The holiday falls on the second Monday in October and recognizes the contributions and sacrifices of Native Americans in South Dakota's history. The bill was signed into law on March 25th of that year.