What caused the battle of lexington and concord?

After the Boston Tea Party the crown had closed the port of Boston, brought in more troops, and passed the Intolerable Acts ( colonial wording) so tensions were high in and around Boston. The British thought that by doing all of this that they would teach the colony respect, but it did the opposite. The Son's of Liberty had been collecting guns and ammo and storing it in places like Concord. On the night of April 18, 1775 the British finally decided to raid Concord and 700 British troops crossed the Charles River to march to Concord to arrest patriot leaders like John Adams. They were also to seize gunpowder, guns, and anything else they could find. Later, that night Dawes and Prescott rode through Lexington to warn that "regulars were on the march" ( Revere never finished the ride. He was arrested by a patrol.) The men of Lexington decided to form and wait for the troops on the colonial green. All 77 of the town's men and boys waited for the most powerful army in the world at that time. When the troops arrived in Lexington the men were told to "get off the Kings green." and to leave. They didn't and shots were fired ( no one knows who shot them) and 8 Americans were killed as well as several others were wounded. After setting fire to a couple of houses and raiding them the British moved on to Concord. News about Lexington moved fast and Concord was ready to greet the troops. On the small bridge in Concord the two groups met and the "shot that was heard around the world" was fired. The war had started. All the way back to Boston ( 25 miles) the troops were shot at by the hundred of colonials that had now gathered. The British lost 273 men that day to the colonials 91.