1. The Battle of the Tongue River occurred on February 25, 1877, near present-day Miles City. It was a skirmish between the US Army and Northern Cheyenne and Lakota Sioux warriors, resulting in a significant loss for the Army.
2. In 1934, February 25 was declared "Montana Day" by Governor Frank Henry Cooney, commemorating the state's admission to the Union on November 8, 1889.
3. On February 25, 1907, the Montana State House of Representatives approved the bill to make the Montana State flower the Bitterroot, which became official on February 27 of that year.
4. The Blackfeet Indian Reservation was created on February 25, 1855, by a treaty signed between the US Government and Blackfeet chiefs.
5. In 1864, a group of Confederate sympathizers led by Major James L. Fisk attempted to establish the Territory of Montana as a Confederate state. However, their efforts were thwarted, and Fisk was arrested on February 25 of that year.