Answer: The Boston Massacre.
Explanation: The event that occurred on Monday, March 5, 1170 and that helped unleash the Revolution was the Boston Massacre, a confusing event in which three people lost their lives and eight were injured. The bloody event was presented by the claims of some Boston residents for the high taxes established by the English Crown on some products and the cordoning of the city by the English army, which caused great discomfort to the settlers.