1. On September 25, 1900, William Fairweather discovered gold in Quartz Creek, near Philipsburg, Montana. This led to a gold rush in the area and the development of several mining towns.

2. On September 25, 1978, Montana's first and only nuclear power plant, the Montana Power Company's Montana Nuclear Generating Station, began operation. It was shut down in 1985 due to maintenance and regulatory issues.

3. September 25, 1890 marked the opening of the first school in Billings, Montana. The school had just one teacher and 12 students, but it grew rapidly as more families moved to the area.

4. On September 25, 1929, the first flight took off from the newly opened Bozeman Airport. The airport was built to serve the growing demand for air travel in the region and has since become a major transportation hub.

5. Montana's capital city, Helena, was founded on September 25, 1864. The city was named after Helena Warren, the daughter of one of the founders of the town. Today, Helena is known for its rich history, outdoor recreation opportunities, and vibrant arts scene.