1. On January 6, 1886, Helena, the capital city of Montana, experienced what is known as "The Christmas Week Flood." Heavy rainfall caused a sudden rise in the Missouri River, which flooded the town and caused significant damage to buildings and infrastructure.

2. In 1894, the Northern Pacfic Railway strike erupted on January 6, as workers went on strike to protest low wages and poor working conditions. The strike spread throughout Montana and other states, and eventually involved tens of thousands of workers.

3. On January 6, 1919, Montana became the first state to ratify the 19th Amendment to the United States Constitution, which granted women the right to vote. The state had previously given women the right to vote in 1914, making Montana a leader in the women's suffrage movement.

4. The Montana State Capitol building, located in Helena, was dedicated on January 6, 1902, after years of planning and construction. The building is listed on the National Register of Historic Places and is a popular tourist attraction.

5. On January 6, 1949, Montana State University in Bozeman was designated as a land-grant university, meaning it receives federal funding for agricultural and mechanical education. The university was originally established in 1893 as the Agricultural College of the State of Montana.