American Revolution · 1765–1774

What Caused the American Revolution? From the Stamp Act to the Tea Party

By the Aurelius editorial team · 3 min read · Updated 15 October 2026

On a cold March night in 1770, a crowd on King Street in Boston pelted a British sentry with snowballs, ice and insults. Minutes later, five men lay dead or dying. Within weeks anyone could buy a picture of what had happened, and it was not quite what had happened.

A war that had to be paid for

In 1763 Britain won the Seven Years' War, known in America as the French and Indian War, and took Canada from France. Victory nearly doubled the national debt. Ministers in London thought it fair that the colonists, whose frontier the army had defended, should help pay for the troops that would stay in North America.

The colonists saw it differently. For more than a century their own elected assemblies had voted their taxes. Parliament regulated their trade, but it had never laid a direct tax on them.

Stamps and a principle

The Stamp Act of 1765 required newspapers, legal documents, licences and even playing cards to carry a paid stamp. In Boston, crowds wrecked property belonging to the stamp distributor, Andrew Oliver, and later ransacked the house of Lieutenant Governor Thomas Hutchinson. Delegates from nine colonies declared that only their own assemblies could tax them, and merchants stopped ordering British goods.

London replied that the colonists were “virtually represented”: Parliament spoke for all British subjects, including the many people in Britain who had no vote. Americans answered that a body 3,000 miles away, with no American members, could not consent for them. Parliament repealed the Stamp Act in 1766, but passed the Declaratory Act the same day, claiming the right to make laws for the colonies “in all cases whatsoever”.

Soldiers on King Street

The Townshend Acts of 1767 put duties on imported glass, lead, paint, paper and tea. Boston organised boycotts, and in 1768 the government sent regiments to the town. Off-duty soldiers took casual work for low wages, competing with local labourers, and brawls became common.

On 5 March 1770 a crowd surrounded a sentry outside the Custom House. Captain Thomas Preston came to his aid with a small party of men. Jostled and struck with clubs and ice, the soldiers fired. Three men died on the spot and two more of their wounds, among them Crispus Attucks, a sailor of African and Native American descent. That same day, by coincidence, Lord North proposed in London to repeal every Townshend duty except the one on tea.

A picture and a trial

Three weeks later the Boston silversmith Paul Revere was selling an engraving of the shooting. It shows the redcoats firing a disciplined volley on an officer's command into a peaceful crowd. Even the design was borrowed: the artist Henry Pelham accused Revere of copying his drawing.

The soldiers were tried in Boston. Their lawyer was John Adams, a committed patriot who believed even hated men deserved a defence. Preston and six of his men were acquitted; two were convicted of manslaughter and branded on the thumb. The courts gave the soldiers a fair hearing, but it was Revere's picture that most people remembered.

Tea in the harbour

The Tea Act of 1773 actually made tea cheaper, by letting the struggling East India Company sell directly to chosen merchants in America. But it kept the Townshend duty, and buying the cheaper tea meant accepting Parliament's right to tax. Smugglers of Dutch tea had their own reasons to object.

In Boston, Governor Hutchinson refused to let the tea ships leave without paying the duty. On the night of 16 December 1773, after a mass meeting at the Old South Meeting House, men thinly disguised as Mohawks boarded three ships and dumped 342 chests of tea into the harbour. Bostonians called it “the destruction of the tea”; the name “Boston Tea Party” caught on only decades later.

Boston punished

Britain's answer, in 1774, was a set of laws that historians call the Coercive Acts and colonists called the Intolerable Acts. The port of Boston was closed until the tea was paid for, town meetings were restricted, and General Thomas Gage arrived as governor of Massachusetts with more troops.

The aim was to isolate Boston. Instead, other colonies sent food and money, and in September 1774 delegates from twelve colonies met in Philadelphia as the First Continental Congress. They did not yet speak of independence, but of their rights as Englishmen, and of a boycott.

In their own words

“Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence.”

John Adams, Argument for the defence in the trial of the British soldiers (Rex v. Wemms), December 1770

From the shorthand record of the trial, reprinted in the Legal Papers of John Adams, vol. 3. Adams, a patriot, was defending soldiers his own side wanted punished.

Why it happened

• Britain's debt from the Seven Years' War, and the cost of keeping troops in America.
• The colonial tradition that only elected local assemblies could vote taxes.
• The presence of soldiers in Boston from 1768, which turned a political quarrel into street confrontations.

What happened next

• The Coercive Acts drew the colonies together in the First Continental Congress of 1774.
• General Gage's attempt to seize colonial weapons led to fighting at Lexington and Concord in April 1775. Read the story →
• The argument over consent to taxation grew into a claim to independence in 1776. Read the story →

Why it still matters

Since 2000, licence plates in Washington, DC have carried the slogan “Taxation Without Representation” (updated in 2017 to “End Taxation Without Representation”). The city's residents pay federal taxes but have no voting member of Congress, and they borrowed Boston's complaint to say so.

Connected stories

• Lexington and Concord: The First Shots: The Coercive Acts put Boston under military rule, and the attempt to enforce them led to the first battle.
• The Declaration of Independence: Within three years, the quarrel over who could tax the colonies had become a declaration of independence.

Sources

• Robert Middlekauff, The Glorious Cause: The American Revolution, 1763–1789 (1982; rev. 2005)
• Hiller B. Zobel, The Boston Massacre (1970)
• Benjamin L. Carp, Defiance of the Patriots: The Boston Tea Party and the Making of America (2010)
• John Adams, Legal Papers of John Adams, vol. 3 (1965), ed. L. Kinvin Wroth and Hiller B. Zobel

Images are credited under each picture. Paintings and photographs come from public collections via Wikimedia Commons; scenes with no surviving image are marked as illustrations.