1. Montana became a state: On July 10, 1890, Montana was admitted as the 41st state in the United States. It was originally settled by Native American tribes such as the Shoshone, Crow, and Blackfeet, and later saw an influx of European settlers during the 19th century.

2. The Battle of the Big Hole: On July 10, 1877, the Battle of the Big Hole took place in southwestern Montana between U.S. soldiers and members of the Nez Perce tribe. The Nez Perce were attempting to flee to Canada from persecution by the U.S. government, but were attacked by soldiers in the early morning. The battle left many dead on both sides.

3. The opening of Logan Pass: On July 10, 1933, Logan Pass in Glacier National Park officially opened for the first time. The pass, located on the Continental Divide, is a popular destination for hikers and sightseers, and offers stunning views of the surrounding landscape.

4. The founding of Billings: On July 10, 1882, the city of Billings was founded. It started as a small railroad town, but quickly grew into a regional hub for commerce and industry. Today, Billings is Montana's largest city and a center for oil and gas, agriculture, and healthcare.

5. The death of Jeannette Rankin: Jeannette Rankin, the first woman to serve in Congress, died on July 10, 1973 in Carmel, California. Rankin was born in Montana and served two non-consecutive terms in the House of Representatives, in 1917-1919 and 1941-1943. She was a leading suffragist and pacifist, and was the only member of Congress to vote against both World War I and World War II.