The event that led to the start of the American Revolutionary War was The Battles of Lexington and Concord.

Fought on April 19, 1775, these skirmishes marked the first military engagements between British troops and colonial militias. Tensions had escalated due to British taxation and the Intolerable Acts, but the battles signified a shift from protest to armed conflict. The confrontations demonstrated the colonists' willingness to fight for their rights and liberties, igniting the Revolutionary War and ultimately leading to the colonies' quest for independence from British rule.