The slogan "No American should be taxed without representation" was notably used during the American Revolution, specifically in relation to the Stamp Act of 1765. This act imposed direct taxes on the colonies without their consent as they had no representatives in the British Parliament. The rallying cry encapsulated the growing tensions between the American colonists and British authorities, emphasizing the principle of self-governance. It became a fundamental justification for the Revolutionary movement, and fueled protests, organizing, and ultimately, the quest for independence from British rule, culminating in the Declaration of Independence in 1776.