Treaty of Amity and Commerce
- Official recognition of U.S. independence
- Most-favored-nation reciprocal tariff treatment
- Protection of American ships and merchants in French ports
- Legal basis for post-independence transatlantic trade
Historical feature · 1775 – 1783 · Franco-American alliance
American War of Independence: The Birth of the United States and France's Role
From Lexington to Yorktown, explore the American Revolution: a complete timeline, decisive battles, major protagonists, and verified anecdotes — highlighting the founding bond between France and the United States.
⚔️ 20+ key dates
🇫🇷🇺🇸 1778 Alliance
📜 NPS & Archives sources
1 · Introduction
The American War of Independence (1775-1783), also called the American Revolution, is the conflict through which thirteen British North American colonies won sovereignty. Born of fiscal, political, and ideological tensions ("taxation without representation," natural rights, Enlightenment thought), it led to the Declaration of Independence on July 4, 1776 and international recognition of the United States in the 1783 Treaty of Paris.
Without French support — diplomatic, financial, land, and above all naval — American victory would have been unlikely. The alliance formalized in 1778 laid the groundwork for a lasting friendship, commemorated today by the Statue of Liberty and many shared monuments.
1775–1783War duration
13Rebel colonies
1781Yorktown — turning point
1778Franco-American alliance
2 · Context and revolutionary spark
After the Seven Years' War (1763), the British Crown sought to fund its debt through new colonial taxes (Stamp Act, Townshend Acts). Colonists responded with boycotts, committees of correspondence, and a rhetoric of English rights extended by Enlightenment ideals. Boston events — the 1770 Massacre, the 1773 Tea Party — radicalized opinion. The First Continental Congress (1774) coordinated resistance; in April 1775, the shots at Lexington and Concord turned crisis into open war.
3 · Complete timeline
Dates, battles, protagonists, and summaries — from pre-revolutionary crisis to the 1783 peace.
American initiative / victory or key U.S. milestone
British initiative or victory
French intervention or alliance
Political / precursor event
1765
Stamp Act — fiscal crisis
British Parliament · Sons of Liberty · Patrick Henry
Parliament imposes a stamp tax on colonies without representation. Mass protests, boycotts, and the slogan "No taxation without representation." Repealed in 1766, but parliamentary sovereignty remains asserted — widening the fracture.
Dec. 16, 1773
Boston Tea Party
Sons of Liberty · Samuel Adams · East India Company
Militants dump tea chests into Boston Harbor to protest monopoly and taxation. London responds with the "Intolerable Acts" (1774), closing the port and strengthening the governor — pushing colonies toward unity.
Apr. 19, 1775
Lexington & Concord
George Washington (appointed later) · Gage · Revere · militia
British troops try to seize stores at Concord; local militias fire back. The "shot heard round the world" opens the war. The Second Continental Congress meets and organizes the Continental Army.
June 17, 1775
Battle of Bunker Hill
William Howe · Israel Putnam · William Prescott
British forces take Charlestown heights at heavy cost. Rebels lose tactically but prove they can stand against regulars — American morale rises despite retreat.
July 4, 1776
Declaration of Independence
Thomas Jefferson · John Adams · Benjamin Franklin · Hancock
Congress adopts the text proclaiming separation from Britain and inalienable rights (life, liberty, pursuit of happiness). It defines U.S. political identity and inspires later revolutions.
Aug. 27, 1776
Battle of Long Island
Washington · Howe · Charles Cornwallis
British land at Brooklyn and crush the Continental Army. Washington executes a night retreat to Manhattan, saving the army from encirclement. New York remains under British control for years.
Dec. 26, 1776
Battle of Trenton
George Washington · Hessians (Rall)
Washington crosses the Delaware by night and surprises a Hessian garrison. Modest territorially but huge symbolically — revives enlistment and confidence after a string of defeats.
Jan. 3, 1777
Battle of Princeton
Washington · Cornwallis
Washington strikes a British vanguard and forces Cornwallis to fall back toward New Brunswick. With Trenton, this winter campaign restores American strategic initiative in the Middle Colonies.
Sept. 11, 1777
Battle of Brandywine
Washington · Howe · Lafayette (first major action)
Howe defeats Washington in Pennsylvania and opens the road to Philadelphia, the rebel capital, soon occupied. Lafayette, wounded, earns Washington's trust. Americans continue to harass the occupier.
Sept. 19 – Oct. 7, 1777
Battles of Saratoga
Horatio Gates · John Burgoyne · Benedict Arnold
Burgoyne's army advancing from Canada is encircled and surrenders at Saratoga. This major victory convinces France the rebels can win — direct prelude to the 1778 alliance.
Winter 1777–1778
Valley Forge
Washington · von Steuben · Lafayette
The Continental Army endures hunger, cold, and typhus in Pennsylvania. Von Steuben reorganizes infantry and discipline. Emerging in spring, American troops are more professional — foundation for the next campaign.
Feb. 6, 1778
Franco-American alliance treaty
Benjamin Franklin · Vergennes · Louis XVI
Paris recognizes U.S. independence and signs treaties of amity, commerce, and military alliance. France officially enters war against Britain — a global geopolitical turning point.
July 1778
Lafayette at Rhode Island
Marquis de Lafayette · Comte d'Estaing
Lafayette, already a veteran, strengthens Franco-American ties in the field. d'Estaing's French fleet attempts combined operations against Newport — early steps toward decisive naval cooperation.
June 28, 1778
Battle of Monmouth
Washington · Lafayette · Charles Lee · Clinton
Washington retakes command after a poorly handled retreat by Lee and holds against Clinton withdrawing from Philadelphia. Tactically indecisive but proves the Continental Army can fight regulars in open battle.
Dec. 29, 1778
Capture of Savannah
Henry Clinton · Cornwallis · Southern campaign
British take Savannah, Georgia, shifting the war south and hoping to rally loyalists. The strategy yields temporary British wins but strains supply lines.
May 12, 1780
Fall of Charleston
Clinton · Benjamin Lincoln
Charleston surrenders with thousands of American prisoners — one of the worst Continental defeats. The South seems British, but guerrilla war resumes in the Carolinas.
Aug. 16, 1780
Battle of Camden
Cornwallis · Horatio Gates
Cornwallis routs Gates in South Carolina. The Southern Continental Army scatters; Washington assigns the theater to Nathanael Greene, who adopts attrition and raid strategy.
Oct. 7, 1780
Battle of Kings Mountain
Overmountain militia · Patrick Ferguson
Frontier militia destroy a loyalist detachment. Major American victory in the Southern war — Cornwallis must revise strategy.
Jan. 17, 1781
Battle of Cowpens
Daniel Morgan · Banastre Tarleton
Morgan uses a feigned retreat to trap Tarleton's legion. Brilliant American victory in South Carolina — prelude to Cornwallis's race toward Virginia.
Mar. 15, 1781
Battle of Guilford Courthouse
Cornwallis · Nathanael Greene
Cornwallis wins the field but loses nearly a quarter of his troops. Greene withdraws in order; a pyrrhic British victory that weakens Cornwallis and pushes him toward Yorktown.
Sept. 5, 1781
Battle of the Chesapeake (Capes)
Admiral de Grasse · Thomas Graves
The French fleet blocks the British squadron and prevents Cornwallis's resupply by sea. Without this naval victory, the Yorktown siege would have failed — the most decisive moment of French intervention.
Sept. 28 – Oct. 19, 1781
Siege of Yorktown
Washington · Rochambeau · Lafayette · Cornwallis · de Grasse
Franco-American forces encircle Yorktown by land and sea. Cornwallis surrenders October 19, 1781. British Prime Minister Lord North reportedly said "It is over" — the war shifts toward negotiation.
Sept. 3, 1783
Treaty of Paris
Franklin · Adams · Jay · Shelburne
Britain recognizes U.S. independence and sets boundaries (Great Lakes to Mississippi, Florida to Spain). The American Revolution ends; an experimental federal republic is born.
4 · Battle map
Location of major engagements in the War of Independence (1775-1783).
5 · Americans / British / French comparison
Forces, goals, and contributions of the three main belligerents.
| Criterion | Americans (Continentals + militia) | British (+ Hessians, loyalists) | French |
|---|---|---|---|
| Command | George Washington, Continental Congress | Howe, Clinton, Cornwallis | Rochambeau, de Grasse, Lafayette |
| Peak strength | ~20,000 Continentals + militia | ~40,000+ regulars + mercenaries | ~6,000 land + 28 ships (1781) |
| Navy | Emerging fleet (John Paul Jones) | World's leading navy | Decisive at Chesapeake (1781) |
| Finance | Paper money, loans, foreign aid | British treasury | Massive loans, rising public debt |
| Allies | France (1778), Spain (1779) | Hessians, colonial loyalists | United States, Spain (1779) |
| Strategic goal | Independence and autonomy | Restore Crown authority | Weaken Britain, 1763 revenge |
| Decisive contribution | Home ground, mobilization, endurance | Discipline, experience, city control | Money, fleet, troops at Yorktown |
6 · Battles table (color = winner)
American victory
British victory
French victory / action
British pyrrhic victory
Draw
| Battle | Date | Winner | Summary |
|---|---|---|---|
| Bunker Hill | June 17, 1775 | Great Britain | Costly British victory |
| Long Island | Aug. 27, 1776 | Great Britain | Major Continental defeat |
| Trenton | Dec. 26, 1776 | United States | American surprise, morale boost |
| Princeton | Jan. 3, 1777 | United States | Northern initiative restored |
| Brandywine | Sept. 11, 1777 | Great Britain | Philadelphia falls |
| Saratoga | Oct. 1777 | United States | Burgoyne surrenders — triggers FR alliance |
| Monmouth | June 28, 1778 | Draw | Continental Army holds against regulars |
| Savannah | Dec. 29, 1778 | Great Britain | Southern campaign opens |
| Charleston | May 12, 1780 | Great Britain | Heavy American defeat |
| Camden | Aug. 16, 1780 | Great Britain | Gates routed |
| Kings Mountain | Oct. 7, 1780 | United States | Militia crush loyalists |
| Cowpens | Jan. 17, 1781 | United States | Morgan's tactical win |
| Guilford Courthouse | Mar. 15, 1781 | UK pyrrhic | Cornwallis weakened despite field win |
| Chesapeake (Capes) | Sept. 5, 1781 | France | de Grasse blocks Graves — key to Yorktown |
| Yorktown | Oct. 19, 1781 | United States (+ France) | Cornwallis surrenders — war turning point |
7 · The 1778 alliance treaty — in depth
Signed in Paris on February 6, 1778, it turned a colonial rebellion into a global war.
After the American victory at Saratoga (fall 1777), King Louis XVI and Foreign Minister Count de Vergennes judged the rebels could win. On February 6, 1778, in Paris, Benjamin Franklin (U.S. commissioner), Silas Deane, and Arthur Lee signed two separate treaties with France:
Treaty of Alliance
- Defensive military alliance — joint war against Great Britain
- France pledged not to make peace without American independence
- Mutual guarantees on North American possessions
- France openly enters the war (1778) — global conflict
Immediate consequences: Britain must fight on multiple fronts. Spain joined in 1779; the Netherlands in 1780. French aid (loans, grants, Rochambeau's troops, de Grasse's fleet) cost billions of livres and increased public debt — a pre-revolutionary factor in France. Texts and context: Library of Congress — Continental Congress, National Archives — Treaty of Alliance with France.
8 · France's decisive role
Motivated by revenge against Britain after 1763 and Enlightenment ideals, France provided loans, weapons, instructors, troops (Rochambeau), and above all the navy. Benjamin Franklin at Versailles, Lafayette in the field, de Grasse at sea: three pillars of an alliance formalized by the 1778 treaty.
The alliance also shaped France internally — rising debt, circulating republican ideas — and foreshadowed the French Revolution of 1789.
9 · Downloadable PDF guide
Download the PDF guide: Americans / British / French comparison, 1778 treaty, and battles table with color codes by winner.
3 parts · color-coded winners
- Part A — American, British, and French forces
- Part B — 1778 alliance treaty (8 key points)
- Part C — 15 battles (blue USA / red GB / gold France)
Educational PDF France-USA-Net.Com · Sources: nps.gov, archives.gov, loc.gov
10 · Visuals & Franco-American tactical cooperation
11 · Verified anecdotes
Authentic stories documented by official archives and museums.
🎂 Lafayette, teenage hero
The Marquis de Lafayette was only 19 when he landed in America in 1777, having circumvented the king's ban on serving the American cause. He became a major general and one of Washington's trusted officers.
Sources: National Park Service, Mount Vernon⚓ de Grasse: the race to the Chesapeake (August 1781)
Sailing from Saint-Domingue with 28 ships of the line and roughly 3,000 troops, Admiral de Grasse took a risky gamble: leave the Caribbean ahead of Hood's British squadron and reach Chesapeake Bay. He arrived on August 30, 1781, days before Graves. Washington and Rochambeau were already marching south counting on that promise — without this timing, Cornwallis might have been evacuated by sea.
Sources: National Park Service — Yorktown, Washington/de Grasse correspondence🌊 de Grasse at Cape Henry: blockade at all costs
On September 5, 1781, de Grasse fought Admiral Graves at the mouth of Chesapeake Bay. The battle was confused and several French ships were damaged, but de Grasse held his ground and kept the British from resupplying Yorktown. Graves withdrew to New York; Cornwallis was trapped. Washington would write that the French fleet's success was the most decisive event of the campaign.
Sources: U.S. Naval History & Heritage Command, NPS — Battle of the Capes🗡️ "I have not yet begun to fight"
John Paul Jones, captain of the Bonhomme Richard, is credited with this famous line during the 1779 naval clash with the Serapis — a symbol of American naval determination before large-scale French intervention.
Source: U.S. Naval History & Heritage Command🎻 Cornwallis absent at surrender
On October 19, 1781 at Yorktown, General Cornwallis claimed illness and delegated surrender to Brigadier O'Hara. Tradition holds he would not personally present his sword to Washington.
Source: National Park Service — Yorktown Battlefield💰 Massive French debt
French aid (loans, grants, military spending) totaled billions of livres — a major contribution to public debt that fueled pre-revolutionary tensions in France.
Sources: French National Archives, economic historiography🗽 From Yorktown to the Statue of Liberty
Gifted by France in 1886, the Statue of Liberty commemorates Franco-American friendship born of the revolutionary alliance. Bartholdi designed it; Eiffel helped engineer the internal structure.
Source: National Park Service — Statue of Liberty🔄 Benedict Arnold, legendary traitor
A Saratoga hero turned British spy in 1780, Benedict Arnold tried to deliver West Point. His name became synonymous with treason in the United States.
Source: National Archives, West Point Museum12 · Franco-American legacy
The 1778 alliance remains one of the symbolic foundations of France–United States relations: commemorations at Yorktown, a U.S. Navy destroyer named for Lafayette, city twinnings, and constant reminders that America's birth is also a transatlantic story. Enlightenment ideas — natural rights, popular sovereignty — flowed both ways and fed revolutions on both sides of the Atlantic.
"The cause of America is the cause of all humanity."
— Attributed to the Marquis de Lafayette, symbol of Franco-American commitment13 · Frequently asked questions
When did France enter the war alongside the United States?
On February 6, 1778, with treaties of amity, commerce, and military alliance signed in Paris after the victory at Saratoga. See the 1778 treaty section.
Which battle was the turning point of the war?
The Siege of Yorktown (October 1781), made possible by the French naval victory at the Chesapeake on September 5, 1781.
Did France recognize U.S. independence before 1778?
Official recognition came with the treaties of February 6, 1778; prior French aid (Silas Deane, Beaumarchais) remained semi-clandestine.
How many treaties were signed on February 6, 1778?
Two: the Treaty of Amity and Commerce and the Treaty of Alliance against Great Britain.
What is the official end date of the war?
September 3, 1783 with the Treaty of Paris: Great Britain recognized U.S. independence.
14 · Official sources
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