1. In 1820, the newly formed state of Maine was admitted to the United States, separating from Massachusetts. While not specifically related to New Hampshire history, this event marked an important moment in the history of the region as a whole.

2. In 1864, Confederate soldiers attacked a Union encampment in New Hampshire's St. Albans, marking the northernmost land action during the Civil War. While the attack was unsuccessful, it remains a significant moment in the state's military history.

3. In 1944, the state of New Hampshire introduced its current state constitution, replacing the previous document that had been in place since 1784. The new constitution established a stronger executive branch and expanded voting rights.

4. In 1976, the popular amusement park Canobie Lake Park in Salem was listed on the National Register of Historic Places, marking its significance as a cultural landmark. Originally founded as a trolley park in 1902, it remains a popular destination for families throughout the region.

5. In 2012, the New Hampshire Supreme Court ruled in favor of same-sex marriage in the state, making it the ninth state to allow for such unions. The decision was seen as a significant moment in the state's progress towards greater equality and civil rights.