Video: 'Siege of Boston (1775-1776): The First Major Conflict of the American Revolution'

(Sunday, March 17, 1776, 9:00 a.m. local time; during the American Revolutionary War and the American Revolution) — Threatened by Patriot cannons on Dorchester Heights, the British evacuated Boston today, ending the 11-month Siege of Boston.

Video: 'The Revolution: Rebelling To Revolution' (Mar. 17, 1776, at 43:30)