What was the main significance of the battle of Lexington and concord ?

It marked the beginning of the American Revolution

Explanation:

The Battles of Lexington and Concord signaled the start of the American Revolutionary war on April 19, 1775. The British Army set out from Boston to capture rebel leaders Samuel Adams and John Hancock in Lexington as well as to destroy the Americans store of weapons and ammunition in Concord. The colonists were warned however, by riders including Paul Revere, that the British Army was approaching. Sam Adams and John Hancock were able to escape and the local militia was able to hide much of their ammunition and weapons.