1. In 1883, the Northern Pacific Railroad finally completed its main line through Montana on May 7th. This railroad played a crucial role in the state's economic growth, allowing for easier transportation of goods and people.

2. On May 7th, 1929, the first ever official Trail of the Coeur d'Alenes walkathon was held in Montana. The walkathon was a 200-mile journey that started in Missoula and ended at the Coeur d'Alene Mission in Idaho. The event promoted health and fitness, and raised money for charity.

3. In 1945, on May 7th, a B-17 aircraft crashed in the Big Snowy Mountains during a training mission. All on board survived the crash and were eventually rescued. The wreckage is now a popular hiking destination for adventurous hikers.

4. On May 7th, 1967, the Montana State Capitol building was lit up at night for the very first time. The lighting ceremony was part of a celebration marking the 75th anniversary of Montana's statehood.

5. In 2000, on May 7th, a grizzly bear known as "Bear 863" was captured and relocated by wildlife officials in Montana. The bear had become habituated to human food and was considered a danger to public safety. The relocation was successful and the bear was tracked for several years afterwards.