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3.5 The American Revolution

Verified for the 2025 AP US History examLast Updated on June 18, 2024

The American Revolution (1775-1783) was a transformative conflict that resulted in the birth of a new nation—the United States of America. What began as colonial resistance to British taxation and policy evolved into a full-scale war for independence. Despite facing the world's strongest military power, American colonists managed to secure their freedom through perseverance, strategic leadership, and crucial foreign alliances. This guide examines how the revolution unfolded and the various factors that contributed to the unlikely American victory.

Image Courtesy of History.com

Causes of the American Revolution

In previous study guides, we've examined several factors that led to the American Revolution, including:

✅ Taxation without representation in the British government

✅ Unfair treatment in trade and commerce that favored British merchants over colonists

✅ Resentment over the presence of British troops in the colonies

✅ The Quartering Acts, which required colonists to house and supply British soldiers

✅ The Intolerable Acts of 1774, seen as a direct attack on colonial rights

✅ Enlightenment ideas about natural rights, limited government, and consent of the governed

✅ A growing American identity distinct from being British subjects

The Boston Massacre

The Boston Massacre was a pivotal event in the lead-up to the American Revolution. On March 5, 1770, tensions between colonists and British soldiers stationed in Boston erupted into violence.

A group of colonists began taunting and throwing snowballs at British soldiers guarding the Customs House. As the confrontation escalated, the soldiers opened fire on the crowd, killing five colonists and wounding several others.

The soldiers were put on trial for murder, with John Adams serving as their defense attorney. Though most were acquitted of murder, two were convicted of manslaughter. The incident became a powerful symbol of British oppression and was widely publicized throughout the colonies through pamphlets and engravings.

The Beginning of the War

The Battle of Lexington and Concord

The American Revolution officially began with the Battles of Lexington and Concord in April 1775. British troops were sent to Lexington and Concord, Massachusetts, to seize gunpowder stored by colonial militia. Paul Revere and other riders warned the colonists of the approaching British forces.

At Lexington, a brief skirmish left eight American colonists dead. The British continued to nearby Concord, where they found few weapons. As they retreated to Boston, colonial Minutemen launched attacks from behind trees, stone walls, and buildings, inflicting heavy casualties on the British troops. The British suffered around 300 casualties during this retreat.

This engagement, especially the first shots fired at Lexington, became known as "the shot heard round the world" – marking the beginning of armed conflict in the American Revolution.

George Washington's Leadership

In June 1775, the Second Continental Congress appointed George Washington as commander-in-chief of the Continental Army. Washington was chosen for his:

  • Military experience from the French and Indian War
  • Reputation for courage and leadership
  • Standing and respect among colonial leaders

Washington's appointment was crucial for unifying the colonies and providing organization to the revolutionary cause. Despite having no formal military training, Washington proved to be an effective leader who maintained the army's morale through difficult times.

Early Battles and Challenges

The Battle of Long Island

In July 1776, shortly after the Declaration of Independence, the British sent 35,000 troops to New York City. They launched a three-pronged assault on American positions in what became known as the Battle of Long Island.

Despite determined resistance, the Patriots were overwhelmed by the superior numbers and training of the British forces. Washington was forced to retreat with his army to New Jersey, suffering a severe defeat that threatened the revolutionary cause.

The Battle of Trenton

By December 1776, the Continental Army had suffered heavy losses and desertions. Morale was at a dangerous low. Washington devised a bold plan to boost morale and disrupt British operations.

On Christmas night, Washington led his army across the ice-filled Delaware River during a snowstorm. They launched a surprise attack on Hessian mercenaries (German soldiers hired by the British) stationed at Trenton, New Jersey. The Americans achieved a complete victory, capturing nearly 1,000 Hessians while suffering minimal casualties.

This victory was crucial for several reasons:

  • It restored morale among American troops and civilians
  • It encouraged new enlistments in the Continental Army
  • It demonstrated that the Continental Army could defeat professional European soldiers
  • It showcased Washington's tactical abilities and leadership

Middle Stage of the War (1777-1779)

The Battle of Saratoga

The Battle of Saratoga in October 1777 marked the turning point of the Revolutionary War. It was actually a series of two battles fought in Saratoga, New York, along the Hudson River.

The British strategy involved three generals coordinating to meet near Albany, which would divide America geographically by controlling the Hudson River corridor. General John Burgoyne moved south from Canada toward Albany, expecting to meet up with forces coming from New York City.

However, American forces under General Horatio Gates intercepted and surrounded Burgoyne's army. After two significant battles, Burgoyne was forced to surrender his entire army of 5,700 men.

This American victory was decisive for several reasons:

  • It convinced France to formally ally with the American colonies
  • It brought desperately needed supplies, troops, and naval support to the American cause
  • It led other European countries (including Spain and the Netherlands) to join France against Britain
  • It forced Britain to divert military resources to other parts of the world
  • It demonstrated that American forces could defeat a major British army in the field

French assistance became crucial to the American war effort, providing money, supplies, troops, and naval forces that would ultimately help secure victory.

Image Courtesy of British Battles

Final Stage of the War (1780-1783)

The Battle of Yorktown

The decisive engagement of the Revolutionary War occurred at Yorktown, Virginia, in autumn 1781. British General Lord Charles Cornwallis had established a base at Yorktown, expecting naval reinforcements.

In a brilliant strategic move, General Washington coordinated with French General Rochambeau and French Admiral de Grasse to trap Cornwallis:

  • Washington and Rochambeau marched their combined forces south from New York
  • The French navy blockaded the Chesapeake Bay, preventing British naval reinforcement
  • American and French forces surrounded Yorktown and began a siege

After three weeks of bombardment and failed counterattacks, Cornwallis realized his position was hopeless. On October 19, 1781, he surrendered his entire army of over 8,000 men.

The Treaty of Paris (1783)

Although some fighting continued after Yorktown, the British government recognized that the war was essentially lost. Peace negotiations began in Paris in 1782, leading to the Treaty of Paris signed on September 3, 1783.

The treaty's key provisions included:

  • Recognition of the United States as a free, sovereign, and independent nation
  • Establishment of the Mississippi River as the western boundary of the United States
  • British withdrawal from all posts in American territory
  • Restoration of property and rights for loyalists (though this was often ignored)
  • American access to fishing grounds off Newfoundland

The treaty marked not just the end of the Revolutionary War, but a pivotal moment in world history—the first successful colonial rebellion against a European power. This achievement would later inspire independence movements throughout the Americas and around the world.

Factors Contributing to American Victory

Despite facing the world's most powerful military, the American revolutionaries achieved independence through a combination of factors:

FactorDescription
Geographic advantagesThe vast size of America made it difficult for Britain to control the territory; Americans had superior knowledge of the terrain and used it to their advantage.
Foreign assistanceFrench financial, military, and naval support was crucial, especially at Yorktown; Spain and the Netherlands also aided the American cause by providing resources and diverting British forces.
British strategic errorsBritain failed to coordinate military operations effectively and consistently underestimated American resolve; they often dispersed forces too widely.
Military leadershipWashington's strategic vision and ability to keep the army together through difficult winters and defeats maintained the revolutionary cause; other generals like Gates and Greene made significant contributions.
Ideological commitmentThe colonists' belief in their cause sustained them through eight years of warfare and hardship; the revolution's principles inspired sacrifice and perseverance.
Guerrilla tacticsAmericans effectively used unconventional warfare to counter British military superiority; militia forces harassed British supply lines and disrupted communications.
British domestic politicsOpposition to the war in Britain grew as the conflict dragged on, especially after French intervention made victory less likely and more costly.

Together, these factors enabled the United States to overcome significant obstacles and establish its independence, creating a new nation founded on revolutionary principles of liberty and self-government.

Key Terms to Review (24)

American Revolution: The American Revolution was a colonial revolt that took place between 1765 and 1783, where the Thirteen Colonies fought against British rule to achieve independence and establish a new nation. This struggle was driven by various factors including taxation, political representation, and Enlightenment ideals, ultimately leading to significant changes in government and society.
Battle of Lexington and Concord: The Battle of Lexington and Concord marked the first military engagements of the American Revolutionary War on April 19, 1775. This confrontation was significant as it symbolized the beginning of armed resistance against British rule, showcasing the colonists' resolve to defend their rights and liberties. The battles demonstrated that ordinary citizens could effectively stand up against a professional army, inspiring further revolutionary fervor across the colonies.
Battle of Yorktown: The Battle of Yorktown, fought from September 28 to October 19, 1781, was the last major battle of the American Revolutionary War. This pivotal conflict saw American and French forces, under General George Washington and French General Rochambeau, lay siege to British General Cornwallis’s troops, leading to the surrender of the British forces. The victory at Yorktown effectively ended major military operations in the colonies and paved the way for peace negotiations.
Battle of Long Island: The Battle of Long Island, also known as the Battle of Brooklyn, was a significant conflict fought during the American Revolutionary War on August 27, 1776. It marked the largest battle of the war and resulted in a decisive victory for British forces, showcasing their military superiority and forcing the Continental Army to retreat. This battle was critical as it highlighted the challenges faced by the American forces and set the stage for future engagements in the war.
Battle of Trenton: The Battle of Trenton was a pivotal engagement during the American Revolutionary War, fought on December 26, 1776, in New Jersey. This battle is significant as it marked a turning point for the Continental Army, boosting morale and proving that George Washington's leadership could achieve decisive victories against the British and their Hessian allies.
Battle of Saratoga: The Battle of Saratoga, fought in 1777, marked a pivotal turning point in the American Revolutionary War, as it resulted in a significant victory for the American forces against the British. This battle not only boosted American morale but also convinced France to enter the war as an ally of the colonies, altering the course of the conflict. The success at Saratoga showcased the determination and tactical skill of the American forces, demonstrating their capability to challenge British supremacy on the battlefield.
Boston Massacre: The Boston Massacre was a deadly confrontation that took place on March 5, 1770, between British soldiers and a group of colonial civilians, resulting in the death of five colonists. This incident significantly fueled anti-British sentiments and became a pivotal moment in the buildup to the American Revolution, highlighting the tensions between the colonies and British authorities over issues like taxation and governance.
British laws and policies: British laws and policies refer to the various legislative measures and governmental strategies imposed by Great Britain on its American colonies, which significantly influenced colonial life and ultimately fueled the desire for independence. These laws, including taxes and trade restrictions, aimed to exert control over the colonies and generate revenue for Britain, but they also sparked widespread resentment and resistance among colonists, setting the stage for the American Revolution.
Continental Army: The Continental Army was the unified military force established by the Second Continental Congress in 1775 to fight against British rule during the American Revolutionary War. It played a crucial role in securing American independence and was characterized by its diverse membership, leadership under General George Washington, and evolving strategies that reflected the revolutionary ideals of liberty and self-governance.
Delaware River: The Delaware River is a major river in the eastern United States, flowing approximately 330 miles from the Catskill Mountains in New York to the Atlantic Ocean at Delaware Bay. During the American Revolution, it served as a crucial geographical feature for military movements and strategies, especially for the Continental Army's surprise attack on Trenton in 1776.
Enlightenment: The Enlightenment was an intellectual movement in the 17th and 18th centuries that emphasized reason, individualism, and skepticism of traditional authority. It laid the groundwork for modern democracy, influencing political thought and social reforms, as well as inspiring revolutionary ideas and movements.
France Military Alliance: The France Military Alliance refers to the formal agreement between the American colonies and France during the American Revolution, aimed at supporting the colonies in their fight for independence from British rule. This alliance was pivotal in providing crucial military support, resources, and recognition to the American cause, significantly influencing the outcome of the war.
French and Indian War: The French and Indian War was a conflict fought between 1754 and 1763 in North America, primarily involving British colonists and their Native American allies against the French and their own Indigenous partners. This war was part of a larger global conflict known as the Seven Years' War, and it significantly reshaped territorial claims in North America, leading to tensions that would ultimately contribute to the American Revolution.
General John Burgoyne: General John Burgoyne was a British Army officer and politician known for his role in the American Revolutionary War, particularly as the commander of British forces during the Saratoga campaign in 1777. He is most notable for his surrender at the Battle of Saratoga, which marked a significant turning point in the war, as it led to France formally entering the conflict on the side of the American colonies.
General William Howe: General William Howe was a British Army officer who played a key role during the American Revolutionary War, serving as Commander-in-Chief of British forces in North America from 1776 to 1778. His leadership included significant battles such as the Battle of Bunker Hill and the capture of New York City, but his strategies and decisions also sparked debates about British military effectiveness and tactics against the American forces.
General Horatio Gates: General Horatio Gates was a prominent American general during the Revolutionary War, known for his role in leading the Continental Army to a significant victory at the Battle of Saratoga in 1777. This victory was a turning point in the war, as it secured French support for the American cause and boosted morale among the colonial forces. Gates became a controversial figure, facing criticism for his leadership and eventually falling from grace after later military setbacks.
George Washington: George Washington was the first President of the United States and a central figure in the founding of the nation. He played a pivotal role in leading the American colonies to victory during the American Revolution and set key precedents for the presidency and the new government.
Hessians: Hessians were German mercenaries hired by the British during the American Revolutionary War to help fight against the American colonies. They were primarily from the German state of Hesse-Kassel and became infamous for their disciplined military tactics and effectiveness on the battlefield. Their involvement marked a significant aspect of British military strategy as they sought to suppress the growing rebellion in America.
Intolerable Acts: The Intolerable Acts, also known as the Coercive Acts, were a series of punitive laws passed by the British Parliament in 1774 in response to the Boston Tea Party. These acts aimed to assert British authority over the American colonies and included measures such as closing Boston Harbor and revoking Massachusetts' charter. The Intolerable Acts heightened tensions between Britain and the colonies, contributing significantly to the growing movement toward rebellion and ultimately the American Revolution.
Lord Charles Cornwallis: Lord Charles Cornwallis was a British Army officer and colonial administrator known for his role as a commanding general during the American Revolutionary War. His leadership marked significant events in the war, including the British campaign in the southern colonies and the eventual surrender at Yorktown, which was pivotal in leading to American independence.
McKonkey's Ferry, Pennsylvania: McKonkey's Ferry was a strategic location on the Delaware River where George Washington and his Continental Army famously crossed on the night of December 25-26, 1776, during the American Revolutionary War. This event was pivotal, as it allowed Washington to launch a surprise attack against the Hessian forces in Trenton, New Jersey, turning the tide of the war in favor of the American cause.
Minutemen: Minutemen were colonial militia members who were ready to fight at a moment's notice during the American Revolution. They played a crucial role in the early battles of the conflict, particularly in places like Lexington and Concord, where their rapid mobilization helped confront British troops. The Minutemen symbolize the commitment of the colonies to defend their rights and liberties against British oppression.
Paul Revere: Paul Revere was an American silversmith and patriot best known for his midnight ride on April 18, 1775, to warn the colonial militia of the approaching British forces. His actions became emblematic of the growing resistance against British rule, particularly in relation to the sentiment of taxation without representation and the events leading up to the American Revolution.
Quartering Acts: The Quartering Acts were a series of laws passed by the British Parliament in the 18th century that required American colonists to provide housing, food, and supplies to British soldiers stationed in the colonies. These acts were seen as an infringement on the rights of colonists and fueled tensions between Britain and the American colonies, ultimately contributing to the growing sentiment for independence.