Final answer:
The Battles of Lexington and Concord were a turning point in relations between the colonies and Britain as they marked the beginning of the American Revolution and solidified the colonists' resolve to fight for independence.
Step-by-step explanation:
The Battles of Lexington and Concord were a turning point in relations between the colonies and Britain because they marked the beginning of the American Revolution. Prior to these battles, tensions had been escalating between the colonists and the British due to issues such as British tax laws and the presence of British troops in Boston. However, the actual exchange of gunfire between the British troops and colonial militias at Lexington and Concord solidified the colonists' resolve to fight for independence. The battles demonstrated that the colonists were willing to take up arms against British authority and set the stage for the formation of the Continental Army and the eventual Declaration of Independence.