1. On May 6, 1937, the Hindenburg disaster occurred in New Jersey, but it had a significant impact on Montana's history. The crash created a pivotal moment for Montana's nascent aviation industry, as it spurred an increased focus on improving flight technologies and safety measures.

2. On May 6, 1877, Sitting Bull led his followers across the border from Canada into Montana, following his exile from the United States just a few years earlier. This event marked the beginning of a new era of conflict between Native Americans in Montana and the U.S. government.

3. In 1869, on May 6th, Montana's first public school was established in Helena. This event was an important step forward in the development of Montana's educational system, which played a crucial role in the state's progress and growth.

4. May 6, 1976, saw the establishment of the Montana Historical Society Research Center in Helena. This organization has played a crucial role in preserving and revitalizing Montana's cultural heritage, and has contributed significantly to our understanding of the state's history and evolution.

5. On May 6, 1952, Montana governor John Bonner signed the state's first commercial interests disclosure law. This legislation helped to promote political transparency and accountability across the state, and is still recognized as an important milestone in Montana's political history.