1. The Boston Massacre occurred on March 5, 1770, but the events leading up to it began on March 1 when tensions between British soldiers and Bostonians heightened. The soldiers had been stationed in Boston to enforce British laws and were met with resistance and protests from colonists.

2. On March 1, 1781, the Articles of Confederation, the first constitution of the United States, were officially ratified by all thirteen states in Maryland. The Articles established a weak central government and were eventually replaced by the current United States Constitution.

3. The first ever recorded women's strike in the United States took place on March 1, 1850, in Lowell, Massachusetts. Women textile workers went on strike to protest harsh working conditions and low pay in the mills. Their activism and organizing paved the way for future labor movements.

4. On March 1, 1912, the minimum wage law was enacted in Massachusetts, becoming the first state in the country to establish a minimum wage for workers. The law mandated that women and minors be paid a minimum of $8 per week, which was later adjusted for inflation.

5. The famous Boston Citgo sign, which has become an iconic landmark of the city, was first lit on March 1, 1965. The sign, located near Fenway Park, has since undergone numerous renovations and has become a beloved symbol of Boston's skyline.