Short Timeline of Events – The American Revolution’s Beginning

March 5, 1770: Boston Massacre
In Boston, a small British army detachment that was threatened by mob harassment opened fire and killed five people, an incident soon known as the Boston Massacre. The soldiers were charged with murder and were given a civilian trial, in which John Adams conducted a successful defense.

April 18–19, 1775: Paul Revere’s Ride and the Battles of Lexington and Concord
On the night of April 18, 1775, Paul Revere rode from Charlestown to Lexington (both in Massachusetts) to warn that the British were marching from Boston to seize the colonial armory at Concord. En route, the British force of 700 men was met on Lexington Green by 77 local minutemen and others. It is unclear who fired the first shot, but it sparked a skirmish that left eight Americans dead. At Concord, the British were met by hundreds of militiamen. Outnumbered and running low on ammunition, the British column was forced to retire to Boston. On the return march, American snipers took a deadly toll on the British. Total losses in the Battles of Lexington and Concord numbered 273 British and more than 90 Americans.

June 17, 1775: Battle of Bunker Hill
Breed’s Hill in Charlestown was the primary locus of combat in the misleadingly named Battle of Bunker Hill, which was part of the American siege of British-held Boston. Some 2,300 British troops eventually cleared the hill of the entrenched Americans, but at the cost of more than 40 percent of the assault force. The battle was a moral victory for the Americans.

July 3, 1775: Washington assumed command of the Continental Army in Cambridge

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July 4, 1776: Declaration of Independence adopted
After the Congress recommended that colonies form their own governments, the Declaration of Independence was written by Thomas Jefferson and revised in committee. On July 2 the Congress voted for independence; on July 4 it adopted the Declaration of Independence.

https://www.britannica.com/list/timeline-of-the-american-revolution