New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. The state is named after the island of Jersey in the English Channel. It is bordered on the north by New York, on the east by the Atlantic Ocean, on the southwest by Delaware, and on the west by Pennsylvania. Parts of New Jersey lie within the metropolitan areas of New York and Philadelphia.

New Jersey was originally settled by Native Americans, primarily the Lenni-Lenape. The Lenape were loosely organized groups that practiced small-scale agriculture (mainly based on corn) in order to increase their largely mobile hunter-gatherer society in the region surrounding the Delaware River, the lower Hudson River, and western Long Island Sound. The Lenape society was divided into matrilinear clans that were based upon common female ancestors. These clans were organized into three distinct phratries identified by their animal sign: Turtle, Turkey, and Wolf. They first encountered the Dutch in the early 1600s, and their primary relationship with the Europeans was through fur trade.

Since the state's inception, New Jersey has been characterized by ethnic and religious diversity. In East Jersey, New England Congregationalists settled alongside Scottish Presbyterians and Dutch Reformed migrants from New York. While the majority of residents lived in towns with individual landholdings of 100 acres (0.4 km²), a few rich proprietors owned vast estates. West Jersey had fewer people than East Jersey, and both English Quakers and Anglicans owned large landholdings. Both Jerseys remained agrarian and rural throughout the colonial era, and commercial farming only developed sporadically. Some townships, though, like Burlington and Perth Amboy, emerged as important ports for shipping to New York and Philadelphia. The colony's fertile lands and tolerant religious policy drew more settlers, and New Jersey boasted a population of 120,000 by 1775.

Much of New Jersey was claimed by the Dutch. The Dutch colony of New Netherland consisted of parts of modern New York (New Amsterdam) and New Jersey. Although the European principle of land ownership was not recognized by the Lenape, Dutch policy required formal purchase of all land settled upon, and the first such purchase was of Manhattan, by Peter Minuit.

The entire region became a territory of England in 1664, when an English fleet under the command of Colonel Richard Nicolls sailed into what is today New York Harbor and took over the colony, against extremely little resistance.

During the English Civil War the Channel Isle of Jersey remained loyal to the Crown and gave sanctuary to the King. It was from the Royal Square in St. Helier that Charles II of England was first proclaimed King in 1649, following the execution of his father, Charles I. The North American lands were divided by Charles II, who gave his brother, the Duke of York (later King James II) the region between New England and Maryland as a proprietary colony (as opposed to a royal colony). James then granted the land between the Hudson River and the Delaware River (the land that would become New Jersey) to two friends who had remained loyal through the English Civil War: Sir George Carteret and Lord Berkeley of Stratton.

Settlement for the first 10 years of English rule was in the Hudson River region and came primarily from New England. On March 18, 1673, Berkeley sold his half of the colony to Quakers in England (with William Penn acting as trustee for a time), who settled the Delaware Valley region as a Quaker colony. New Jersey was governed as two distinct provinces, West Jersey and East Jersey, for the 28 years between 1674 and 1702. In 1702, the two provinces were united under a royal, rather than a proprietary, governor.

New Jersey was one of the thirteen colonies that revolted against British rule in the American Revolution. The New Jersey Constitution of 1776 was passed July 2, 1776, just two days before the Second Continental Congress declared American Independence from Britain.

New Jersey representatives Richard Stockton, John Witherspoon, Francis Hopkinson, John Hart, and Abraham Clark were among the men who signed the United States Declaration of Independence. These men, just like all the others, took tremendous risks in order to fight for independence and all went on to serve their newly founded country for the rest of their lives. Distinguished lawyer Richard Stockton, New Jersey-born and College of New Jersey graduate, sacrificed his royal judicial title and his considerable international economic interest in order to be an elected delegate for New Jersey at the General Congress. John Witherspoon was a Scottish immigrant. He came to New Jersey to serve as the sixth president of the College of New Jersey. He was a world renowned Presbyterian minister and became a leading member of the Continental Congress. Witherspoon went on to become one of the leaders of the new national Presbyterian church. Francis Hopkinson was somewhat of a renaissance man for his time. He was articulate in several fields of the arts and a very impressive scientist. Perhaps the capstone of his career was his appointment by President George Washington to the federal bench. John Hart was a prominent landowner and judge of the Hunterdon County court. Like Stockton, he sacrificed his high standing with the royal court and dedicated his life to the New Jersey Assembly. After signing the Declaration of Independence, he went on to become the speaker of the New Jersey Assembly. The last of the men, Abraham Clark, was native to Elizabethtown. He was slightly different from his fellow New Jersey representatives as he jumped from job to job working as a farmer, surveyor, transporter, legal adviser, and finally politician. He was well liked in all these fields and had become a prominent member of society, but he found his home in government. He held numerous political positions at all the various levels of government.

It was an act of the Provincial Congress, which made itself into the state Legislature. To reassure neutrals, it provided that it would become void if New Jersey reached a reconciliation with Great Britain.

During the American Revolutionary War, British and American armies crossed New Jersey numerous times and several pivotal battles took place in the state. Because of this, New Jersey today is often referred to as "The Crossroads of the Revolution."

On December 25, 1776, the Continental Army under George Washington crossed the Delaware River and engaged the unprepared Hessian troops in the Battle of Trenton. Slightly more than a week after victory at Trenton, on January 3, 1777, the American forces gained an important victory by stopping Cornwallis's charges at the Second Battle of Trenton. By evading Cornwallis's army, Washington made a surprise attack on Princeton, and successfully defeated the British forces there.

Later, American forces under Washington met the forces under General Henry Clinton at the Battle of Monmouth in an indecisive engagement. Washington attempted to take the British column by surprise; when the British army attempted to flank the Americans, the Americans retreated in disorder. The ranks were later reorganized and withstood the British charges.

In the summer of 1783, the Continental Congress met in Nassau Hall at Princeton University, making Princeton the nation's capital for four months. It was there that the Continental Congress learned of the signing of the Treaty of Paris (1783), which ended the war.

New Jersey was the third state to ratify the United States Constitution, which was overwhelmingly popular in New Jersey, as it prevented New York and Pennsylvania from charging and keeping tariffs on goods imported from Europe. On November 20, 1789, the state became the first in the newly-formed Union to ratify the Bill of Rights.

The 1776 New Jersey State Constitution gave the vote to "all inhabitants" who had a certain level of wealth. This included both women and blacks; although not married women, who could not own property. Both sides, in several elections, claimed that the other side had had unqualified women vote, and mocked them for use of "petticoat electors" (entitled to vote or not); on the other hand, both parties passed Voting Rights Acts. In 1807, the legislature passed a bill interpreting the constitution to mean universal white male suffrage, excluding paupers.

On February 15, 1804, New Jersey became the last northern state to abolish slavery by enacting legislation that slowly phased out slavery. However, by the close of the Civil War, about a dozen African-Americans in New Jersey were still apprenticed freedmen. New Jersey initially refused to ratify the Constitutional Amendments banning slavery and granting rights to America's Black population.

Unlike the Revolutionary War, no Civil War battles took place within the state. However, throughout the course of the Civil War, over 80,000 enlisted in the Northern army to defeat the Southern rebels. In total, soldiers from New Jersey formed 4 militia regiments, 33 infantry regiments, 3 cavalry regiments, and 5 batteries of light artillery.

New Jersey was one of the few states to reject President Abraham Lincoln twice in national elections, and sided with Stephen Douglas and George B. McClellan during their campaigns. McClellan later became governor. During the war, the state was led first by Republican Governor Charles Smith Olden, then by Democrat Joel Parker.

In 1844, the second state constitution was ratified and brought into effect. Counties thereby became districts for the State Senate, and some realignment of boundaries (including the creation of Mercer County) immediately followed. This provision was retained in the 1947 Constitution, but was overturned by the Supreme Court of the United States in 1962 by the decision Baker v. Carr.

While the Governorship was stronger than under the 1776 constitution (it could hardly be weaker), the constitution of 1844 created many offices that were not responsible to him, or to the people, and gave him a three-year term, but he could not succeed himself.

In the Industrial Revolution, cities like Paterson grew and prospered. Previously, the economy had been largely agrarian, which was problematically subject to crop failures and poor soil. This caused a shift to a more industrialized economy, one based on manufactured commodities such as textiles and silk. Inventor Thomas Edison also became an important figure of the Industrial Revolution, having been granted 1,093 patents. Transportation was greatly improved as locomotion and steamboats were introduced to New Jersey.

Iron mining was also a prevalent industry during the middle to late 1800s. Mines such as Mt. Hope, Mine Hill and the Rockaway Valley Mines created a thriving industry, which spawned new towns and was one of the driving forces behind the need for the Morris Canal.

Through both World Wars, New Jersey was a center for war production, especially in naval construction. Battleships, cruisers, and destroyers were all made in this state. In addition, Camp Kilmer, Fort Dix (originally called "Camp Dix"), and Camp Merritt were all constructed to help American soldiers through both World Wars. New Jersey also became a principal location for defense in the Cold War. Fourteen Nike Missile stations were constructed, especially for the defense of New York City and Philadelphia, Pennsylvania. PT-109, commanded by Lt. John F. Kennedy, was built at the Elco Boatworks in Bayonne, and the aircraft carrier USS Enterprise (CV-6) was briefly docked at the Military Ocean Terminal in Bayonne in the 1950s before she was sent to Japan to be scrapped. In 1962, the world's first nuclear powered cargo ship, the NS Savannah was launched at Camden.

New Jersey became a prosperous state through the Roaring Twenties but fell from prosperity under the Great Depression. Begging licenses were even offered to the unemployed by the state government in order to provide money for those who could not be helped by the exhausted state funds. During this time period, the zeppelin Hindenburg infamously went up in flames over Lakehurst, and the SS Morro Castle beached itself on the Jersey Shore after going up in flames while at sea.

In the 1960s, several race riots sprang up in New Jersey, the first of which occurred in Jersey City on August 2, 1964. Several other riots ensued in 1967, in the cities of Newark and Plainfield. Camden also dealt with race riots in 1971.

Throughout the twentieth century and into the twenty-first, New Jersey was afflicted by nor'easters that caused blizzards and flooding. Those are rather common storms in New Jersey and elsewhere on the east coast of the US, although hurricanes and tropical storms occasionally come to visit, such as Hurricane Floyd in 1999.