Why did the battle of hill happen?

Answer 1

After the battles of Lexington and Concord, the British troops returned to Boston. At that time, the entire town of Boston was on a peninsula, so American militias from many towns in Massachusetts gathered at Roxbury, cutting off Boston from the mainland. That stopped the British from making raids on the countryside and meant that the only way the British could get supplies was by ship. In an attempt to break out, the British attacked at Breed's Hill, on the Charlestown peninsula, across the harbor from Boston, and drove the Americans back across Bunker Hill. The British were successful at seizing that point of land, but was a costly victory and gained them little, as they were still blocked from reaching the mainland. thsi is not good