One of the primary factors leading to the American Revolution was the imposition of British taxes and acts without colonial representation. The Stamp Act of 1765 and the Townshend Acts of 1767 ignited widespread unrest, as colonists believed they should not be taxed by a Parliament in which they had no representatives. This sentiment fueled the rallying cry of "no taxation without representation," uniting diverse groups against British oppression. Events such as the Boston Tea Party further escalated tensions, ultimately leading to calls for independence and armed conflict between the colonies and Britain.