Battles & Wars › Revolutions & Napoleon
American Revolutionary War
1775–1783· War· Americas
Well documentedSolid records, physical evidence or scientific consensus.
Thirteen British colonies in North America fought for and won independence, with crucial help from France, Spain and the Dutch.
See it on the Battles & Wars map →What happened
Disputes over taxes imposed without colonial consent erupted into fighting at Lexington and Concord in April 1775. Congress declared independence in July 1776. George Washington's Continental Army lost many battles but survived. Victory at Saratoga in 1777 brought France into the war in 1778, followed by Spain and the Dutch. A French fleet and Franco-American army trapped the British at Yorktown in 1781. The 1783 Treaty of Paris recognized the United States. Estimates of American deaths range from about 25,000 to 70,000, mostly from disease.
Why it matters
It created the United States and spread the idea that people could overthrow a ruler and found a republic on written principles, inspiring revolutions in France, Haiti and Latin America.
How we know
The Declaration of Independence, records of Congress and the army, Washington's papers, British government archives, and thousands of veterans' pension files filed decades later.
Still debated
Historians debate how far it was a popular uprising or a civil war, since perhaps a fifth of colonists stayed loyal to Britain, and how decisive French help was.
Inside this (4)
Connections (10)
▸English Civil Wars fed the anti-tyranny ideas behind American Revolutionary WarMostly agreed
The connection
The Civil Wars, and the 1688 revolution that followed, left a body of English writing against arbitrary kings, standing armies and taxes without consent. American colonists read its heirs, such as John Locke, Algernon Sidney and the 1720s essays called Cato's Letters, and cast George III's government as a new tyranny, framing resistance as defending English liberties.
When and how
England, 1640s–1720s, through writers like Milton, Sidney and Locke; read in colonial America, especially 1763–1776.
How sure are we?
Historian Bernard Bailyn's study of colonial pamphlets traced these sources; colonists quoted them directly, and some called themselves heirs of Parliament's cause against Charles I.
Debates and open questions
Historians weigh this English radical tradition against Enlightenment thought, Protestant religion and plain economic grievance as causes of the Revolution.
▸Seven Years' War left debts and taxes that sparked American Revolutionary WarWell documented
The connection
The war nearly doubled Britain's national debt, to about £130 million. Parliament decided the colonies should help pay for their own defense and passed the Sugar Act (1764), Stamp Act (1765) and Townshend duties (1767). Colonists, no longer needing protection from French Canada, protested 'no taxation without representation.' The dispute escalated into war by 1775.
When and how
London and the thirteen colonies, 1763–1775; Prime Minister George Grenville's taxes and colonial protests such as the Stamp Act Congress.
How we know
Treasury figures, Parliamentary debates and colonial petitions document the debt, the new taxes and the protests that followed.
Debates and open questions
Historians debate whether the taxes were the real cause or a trigger for deeper splits over self-government, western land and trade.
▸George Washington commanded the Continental Army in American Revolutionary WarWell documented
The connection
Congress chose Washington as commander in June 1775, partly because a Virginian could tie the South to New England's cause. For eight years he kept a poorly supplied, short-term army in the field, avoided battles that could destroy it, struck when chances came, and deferred to Congress's civilian authority.
When and how
Appointed in Philadelphia, June 1775; took command at Cambridge, Massachusetts, in July; resigned at Annapolis, Maryland, in December 1783.
How we know
Congress's journals record his appointment; his orders and letters, and those of his officers, document his command day by day.
Debates and open questions
Historians weigh how much the outcome owed to Washington's leadership versus French aid and British mistakes.
▸Battles of Saratoga brought France into American Revolutionary WarWell documented
The connection
News of Burgoyne's surrender reached Paris in December 1777. France had been secretly sending money and weapons, but now judged the Americans could win. Louis XVI's government, guided by Foreign Minister Vergennes, signed treaties of alliance and commerce with Benjamin Franklin in February 1778, and France went to war with Britain. Spain joined as France's ally in 1779.
When and how
Saratoga, New York, October 1777; Paris and Versailles, December 1777 to February 1778; Franklin, Vergennes and Louis XVI.
How we know
The signed 1778 treaties and French diplomatic correspondence tie the decision to the news from Saratoga.
Debates and open questions
Some historians argue France was already moving toward war to avenge its 1763 losses, and Saratoga only set the timing.
▸Siege of Yorktown effectively ended American Revolutionary WarWell documented
The connection
Losing a second whole army broke Britain's political will. Prime Minister Lord North resigned in March 1782, and Parliament voted against further offensive war in America. Some fighting continued at sea and on the frontier, but peace talks in Paris led to the treaty of September 1783 recognizing American independence.
When and how
Yorktown, October 1781; London, February–March 1782; Treaty of Paris signed September 3, 1783.
How we know
Parliament's votes, North's resignation and the peace talks are fully documented; North reportedly greeted the news with 'Oh God! It is all over.'
Debates and open questions
Whether Britain could have kept fighting, since it still held New York and Charleston and had a strong navy, is debated.
▸American Revolutionary War helped bankrupt France ahead of French Revolutionary and Napoleonic WarsMostly agreed
The connection
France spent over a billion livres helping the Americans, mostly borrowed. By 1788 debt payments took about half of royal spending. To raise taxes, Louis XVI convened the Estates-General in 1789, starting the French Revolution. Revolutionary France then went to war with Europe's monarchies in 1792. Veterans such as Lafayette also carried American ideas home.
When and how
France, 1778–1792; finance ministers Necker and Calonne, King Louis XVI, and veterans of the American war such as Lafayette.
How sure are we?
French treasury accounts, including Calonne's 1786 report on the deficit, show the war debt; historians agree it helped cause the 1789 crisis.
Debates and open questions
How much the American war, versus older debts, an unfair tax system and bad harvests, caused France's bankruptcy is debated.
▸American Revolutionary War helped inspire Haitian RevolutionMostly agreed
The connection
The American example showed colonists could break from Europe, and its language of rights crossed the Atlantic. Over 500 free men of color from Saint-Domingue fought for the Americans at Savannah in 1779. The more direct spark was France's 1789 Declaration of the Rights of Man: free people of color invoked it for equal rights, enslaved people against slavery.
When and how
Savannah, Georgia, 1779; Saint-Domingue, 1789–1791; among free men of color and enslaved people who knew of both revolutions.
How sure are we?
French military records list the Saint-Domingue volunteers at Savannah; Haitian leaders' proclamations echo revolutionary language.
Debates and open questions
Tradition says future Haitian leader Henri Christophe fought at Savannah, but this is unproven; the French Revolution's influence was likely stronger.
▸American Revolutionary War inspired Latin American wars of independenceMostly agreed
The connection
The United States showed that American colonies could win independence and found a republic. Spanish American leaders read its Declaration and Constitution in translation. Francisco de Miranda fought for Spain in the war and later toured the new republic, and several new states copied U.S.-style federal constitutions. Spain's own help against Britain set an awkward precedent for its colonies.
When and how
Pensacola, 1781, where Miranda fought with Spanish forces; Venezuela's 1811 and Mexico's 1824 constitutions, both partly modeled on the U.S.
How sure are we?
Constitution texts, Spanish translations of U.S. documents circulating in the colonies, and the letters of Miranda and Bolívar show the influence.
Debates and open questions
Bolívar himself distrusted U.S.-style federalism; historians weigh the U.S. example against Spain's own crisis and Enlightenment ideas.
▸Submarine made the first submarine attack (1776) in the American Revolutionary WarWell documented
The connection
Bushnell's Turtle was built to break the British fleet's hold on New York Harbor. On September 7, 1776, Sergeant Ezra Lee cranked it under Admiral Howe's flagship, HMS Eagle, but could not attach the gunpowder charge to the hull. He released it as he escaped, and it exploded harmlessly.
When and how
New York Harbor, September 1776; inventor David Bushnell, a Yale-educated Connecticut man, and pilot Ezra Lee.
How we know
Lee's later account, Bushnell's 1787 letter to Thomas Jefferson, and George Washington's praise of the effort; British records do not mention the attack.
Debates and open questions
With no British record, some historians doubt it happened as described; why the screw failed, copper sheathing or poor control, is unknown.
▸Springfield Armory began as an arms depot during the American Revolutionary WarWell documented
The connection
In 1777 Washington's artillery chief Henry Knox chose Springfield, safely inland on the Connecticut River, for an arsenal. It stored muskets and powder, made cartridges and gun carriages, and repaired arms for the Continental Army. Many of the army's muskets, however, came from France.
When and how
Springfield, Massachusetts, 1777–83; Henry Knox and George Washington, with the Continental Army's ordnance staff.
How we know
Continental Army correspondence and the arsenal's records, preserved and interpreted at today's national historic site.
Debates and open questions
How much the arsenal actually supplied during the war is poorly recorded; its output was modest beside French imports.