1. On April 30, 1789, George Washington was inaugurated as the first President of the United States. Although this event did not occur in Massachusetts, it was a significant moment in American history that shaped the course of the nation.

2. In 1630, the settlers of the Massachusetts Bay Colony established the town of Watertown on April 30. This was one of the earliest towns founded in the colony, and it played an important role in the history of Massachusetts as a center of trade and commerce.

3. On April 30, 1775, Paul Revere made his famous ride from Boston to Lexington to warn the colonists that British troops were advancing. This event marked the beginning of the American Revolution, and it is still celebrated as Patriots' Day in Massachusetts.

4. In 1844, the Massachusetts State House was dedicated on April 30. This iconic building has served as the seat of the state government for over 175 years, and it is a symbol of pride and patriotism for the people of Massachusetts.

5. On April 30, 1938, the 100th anniversary of the admission of Massachusetts as a state was celebrated with a series of events and commemorations. This anniversary was a momentous occasion for the people of Massachusetts, who reflected on the achievements and challenges of their state over the past century.