The American Revolutionary War was a war fought between Great Britain and the original Thirteen Colonies in North America from 1775 to 1787. Most of the fighting was in North America and other places. The Continental Army, the rebel army, was led by George Washington and helped by France and Spain. They defeated the British Army after the British moved their attention to other matters. This happened as the British had far more lucrative colonies whilst America at the time had very little of value so they let America have its independence so they could focus on what were richer colonies.

After the war ended, the Thirteen Colonies became independent, which meant that the British Empire was no longer in charge of them. They became the first 13 states of a new country see the world which they called the United States of America.

Background and causes 
The war started after years of problems between the British Empire and the colonists of North America after the French and Indian War (also called the Seven Years' War). People in the Thirteen Colonies disliked many of the actions of the British government, such as the Intolerable Acts. For many years, the British government decided the countries that could trade with the colonies instead of letting the colonies decide for themselves. Many colonists wanted free trade.

In 1765, the British Parliament needed money to pay back the debt for the French and Indian War. They passed a Law called the Stamp Act. This law said that colonists had to buy stamps for legal papers, newspapers, and even playing cards, as other British people did. The money from the stamps went to the King. The colonies did not follow this law. The colonies kept refusing to do what the King wanted. The Boston Tea Party and Boston Massacre caused people to become more angry about the situation. The British sent more soldiers (who were called Red Coats by the colonists to insult them) to keep control of the colonies and they sometimes had to fight. In 1774, the British passed the Intolerable Acts to punish the colonists in Boston for the Boston Tea Party.

Not all colonists wanted to leave the British Empire. The Loyalists, or Tories, stayed loyal to Great Britain. They were not going to change their views. The Patriots, or Whigs, wanted independence. Before the Revolutionary War, most people in America were Loyalists; but after it, most people were Patriots.

Many colonists wrote letters showing how they felt. Thomas Paine wrote Common Sense, a famous pamphlet about independence from Britain. Other colonial leaders, such as Benjamin Franklin, John Adams, and Thomas Jefferson wanted independence.

Northern battles 
The first battles of the American Revolutionary War were Lexington and Concord. One of the first major battles was the Battle of Bunker Hill in 1775. Then, the British controlled Boston. Soon, the Second Continental Congress sent an Olive Branch Petition to King George III, which he rejected, and named George Washington head of the army. Early in 1776, Washington's army drove the British out of Boston.

A few months later, the Continental Army and the British troops under William Howe fought the New York and New Jersey Campaign. During the New York battles, the British started using Hessian troops, who were from Germany. Though the colonists lost New York, which the British would hold it for the rest of the war, Washington was able to hold onto most of his army. Over Christmas, 1776, Washington crossed the Delaware River and defeated the Hessians at Trenton and the British at Princeton.

In 1777, the British attacked Philadelphia, which was the American capital. Two battles were fought over Philadelphia: Brandywine and Germantown. Again, the Americans lost a major city, but Washington was able to keep most of his army. Around then, the marquis de Lafayette joined the American Army from his native France. In 1778, the British left Philadelphia.

Between 1778 and 1781, most battles between Washington and the British were inconclusive and had no major effect militarily.

One of the most important battles was the Battle of Saratoga in 1777. American soldiers under Horatio Gates forced a British surrender under John Burgoyne. That led to France and Spain joining the war on the side of Americans, who they thought would win. Both powerful countries fought the British around the world. From 1778 to 1780, there was fighting in the West.

The Scottish commerce raider John Paul Jones also won several naval battles for the Americans over the British, but the French Navy did most of the fighting at sea. The Americans tried to capture Canada several times but failed.

Southern battles 
In 1779, the main fighting shifted to Georgia and South Carolina. As the fighting spread northward, General Nathanael Greene led the rebels' campaign. He caused many people in the South to be Patriots instead of Loyalists and won several battles against the British.

In 1781, Washington and French General Jean Rochambeau led an offensive against British troops at Siege of Yorktown in Virginia. When their soldiers lost this battle, the British surrendered to the Americans. However, the British continued to fight the French and Spanish for two years and won in India, Gibraltar and elsewhere.

End of war 
The American Revolution came to an end in 1783 when a peace treaty was signed in Paris, France. In the Treaty of Paris, British King George III accepted the independence of the colonies and recognized the newly-created nation as the United States of America.

The treaty also gave all the land Britain claimed to own west of the Appalachians as far as the Mississippi River to the new country. The land would eventually become part of the United States and lead to the creation of 35 new states (some of them later rebelled as part of the Confederate States of America) that now make up the contiguous United States. Many Loyalists fled to Canada.

Casualties 
As Is usual for 18th-century wars, casualty figures (killed/wounded/missing/captured) for the American Revolution are poorly known. Unlike American Civil War casualties, which were published in newspapers, Revolutionary War casualty reports are found in local town histories; total casualties of the Revolution are rough estimates.

References

Other websites 

 American Revolution, military history -Citizendium
 Rosters and Registers of the American Revolution
 Roll of New Hampshire Soldiers in the American Revolution

Revolutions
 
Wars of independence
Wars involving the United States
Wars involving France
18th century rebellions
Rebellions in North America