What important event that took place in the Boston (March 4 1776?

On March 4, 1776, the Continental Army, led by General George Washington, successfully completed the positioning of artillery on Dorchester Heights, overlooking Boston. This strategic move forced the British forces, who occupied the city, to evacuate. The event marked a significant turning point in the American Revolutionary War, as it effectively ended British control of Boston and boosted the morale of the colonial forces.