1. The Great Fire of Boston: On December 7, 1760, a devastating fire broke out in Boston that destroyed over 350 buildings and left 1,000 people homeless. It was considered one of the worst fires in the city's history.

2. The Boston Tea Party: On December 7, 1773, a group of American colonists disguised themselves as Native Americans and boarded three British ships in Boston Harbor. They threw over 340 chests of tea into the water to protest British taxes and regulations on tea.

3. The Massachusetts State Constitution: On December 7, 1780, the Massachusetts State Constitution was ratified, becoming the oldest functioning written constitution in the world. It also influenced the drafting of the U.S. Constitution.

4. Desegregation of Boston Public Schools: On December 7, 1974, a federal court ordered the desegregation of Boston's public schools. The decision resulted in protests, violence, and controversy but eventually lead to a more integrated school system.

5. The Birth of Emily Dickinson: On December 7, 1830, Emily Dickinson, one of America's greatest poets, was born in Amherst, Massachusetts. She lived a secluded life and only gained recognition as a writer after her death in 1886.