After the 7 Years War, the French lost, and the British Won, but was heavily in debt. So they taxed the colonists, living in the New World, America in today's name. They had many laws and it was strict, so people got angry and protested and everything.
On March 1775, Protestors gathered at a place in Boston, as they harassed the soldiers, the Soldiers had enough and fired on the mob, which killed 5. People got more angrier, some even dressed up as Native Americans and threw tea in the ocean, this incident is called the Boston Tea Party, Massachusetts was declared to be in a state of Rebellion.
The Midnight Ride of Paul Revere (1775)
The Midnight Ride of Paul Revere was his travel to Lexington and Concord, Massachusetts, his mission was to warn John Hancock and Samuel Adams, both leaders of the Patriots (Americans). Paul Revere warned that "The Regulars are coming out."
As he warned the Patriots of the enclosing Army, they prepared and the first battle of the Revolutionary War happend began at the towns of Lexington and Concord.
John Pitcairn led his Army to Lexington, where the first shots rang out, Patriot forces fell back to Concord, where there's a huge number of soldiers waiting, which caught the British by Surprise, which led them to fall back. This, signals the start of the Revolutionary War.