The event characterized by the slogan "No taxation without representation" was the American Revolution. This phrase became a rallying cry for the colonists in 1765, expressing their discontent with British taxes imposed without their consent. Colonists believed that they should have representatives in the British Parliament to voice their interests and concerns. The slogan highlighted the broader issues of governance and rights, fueling opposition to British rule. This rising sentiment eventually contributed to the outbreak of the Revolution in 1775, culminating in the colonists’ declaration of independence in 1776.