1. On August 8, 1787, New Hampshire became the ninth state to ratify the United States Constitution, joining the Union and helping to establish the new federal government.

2. On August 8, 1826, the Granite Railway Company was incorporated in New Hampshire. This was the first commercial railroad in the United States, and it was built primarily to transport granite from Quincy, Massachusetts to Charlestown, Massachusetts.

3. On August 8, 1851, the first-ever international regatta was held on Lake Winnipesaukee in New Hampshire. The regatta featured boats from the United States and Canada, and it helped to establish the sport of rowing in the United States.

4. On August 8, 1917, New Hampshire native Ernest Lawrence invented the cyclotron at the University of California. This device allowed scientists to study the structure of atoms more closely, and it eventually led to the development of the atomic bomb.

5. On August 8, 1969, the Woodstock Music and Arts Festival began in upstate New York. While the event is not technically a part of New Hampshire history, many New Hampshire residents attended the festival and it had a significant impact on the culture of the state.