Many events helped cause the American Revolution. It was a terrible war between the colonies of America and the country of England. The three most important events that led up to, and caused it, were the Boston Massacre, The Boston Tea Party, and The Stamp Act. The Boston Massacre was an encounter on March 5, 1770, that was five years before the American Revolution between British troops and a group of citizens of Boston that were then in the Massachusetts Bay Colony. British troops were quartered in the city to discourage demonstrations aga ....