The siege of Louisbourg took place in 1745 when a New England colonial force aided by a British fleet captured Louisbourg, the capital of the French province of le-Royale (present-day Cape Breton Island) during the War of the Austrian Succession, known as King George's War in the British colonies.

The northern British colonies regarded Louisbourg as a menace, calling it the "American Dunkirk" due to its use as a base for privateers. There was regular, intermittent warfare between the French and the Wabanaki Confederacy on one side and the northern New England colonies on the other (See the Northeast Coast Campaigns of 1688, 1703, 1723, 1724). For the French, the Fortress of Louisbourg also protected the chief entrance to Canada, as well as the nearby French fisheries. The French government had spent 25 years in fortifying it, and the cost of its defenses was reckoned at thirty million livres.

Although the fortress's construction and layout was acknowledged as having superior seaward defences, a series of low rises behind them made it vulnerable to a land attack. The low rises provided attackers places to erect siege batteries. The fort's garrison was poorly paid and supplied, and its inexperienced leaders mistrusted them. The colonial attackers were also lacking in experience, but ultimately succeeded in gaining control of the surrounding defences. The defenders surrendered in the face of an imminent assault.

Louisbourg was an important bargaining chip in the peace negotiations to end the war, since it represented a major British success. Factions within the British government were opposed to returning it to the French as part of any peace agreement, but these were eventually overruled, and Louisbourg was returned, over the objections of the victorious British North Americans, to French control after the 1748 Treaty of Aix-la-Chapelle, in return for French concessions elsewhere.

New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces of New Brunswick to the northeast and Quebec to the north. The Atlantic Ocean is to the east and southeast, and Long Island Sound is to the southwest. Boston is New England's largest city, as well as the capital of Massachusetts. Greater Boston is the largest metropolitan area, with nearly a third of New England's population; this area includes Worcester, Massachusetts (the second-largest city in New England), Manchester, New Hampshire (the largest city in New Hampshire), and Providence, Rhode Island (the capital of and largest city in Rhode Island).

In 1620, the Pilgrims, Puritan Separatists from England, established Plymouth Colony, the second successful English settlement in America, following the Jamestown Settlement in Virginia founded in 1607. Ten years later, more Puritans established Massachusetts Bay Colony north of Plymouth Colony. Over the next 126 years, people in the region fought in four French and Indian Wars, until the English colonists and their Iroquois allies defeated the French and their Algonquian allies in America. In 1692, the town of Salem, Massachusetts, and surrounding areas experienced the Salem witch trials, one of the most infamous cases of mass hysteria in American history.In the late 18th century, political leaders from the New England colonies initiated resistance to Britain's taxes without the consent of the colonists. Residents of Rhode Island captured and burned a British ship which was enforcing unpopular trade restrictions, and residents of Boston threw British tea into the harbor. Britain responded with a series of punitive laws stripping Massachusetts of self-government which the colonists called the "Intolerable Acts". These confrontations led to the first battles of the American Revolutionary War in 1775 and the expulsion of the British authorities from the region in spring 1776. The region played a prominent role in the movement to abolish slavery in the United States, and it was the first region of the U.S. transformed by the Industrial Revolution, initially centered on the Blackstone and Merrimack river valleys.

The physical geography of New England is diverse for such a small area. Southeastern New England is covered by a narrow coastal plain, while the western and northern regions are dominated by the rolling hills and worn-down peaks of the northern end of the Appalachian Mountains. The Atlantic fall line lies close to the coast, which enabled numerous cities to take advantage of water power along the many rivers, such as the Connecticut River, which bisects the region from north to south.

Each state is generally subdivided into small municipalities known as towns, many of which are governed by town meetings. While unincorporated areas do exist, they are limited to roughly half of Maine, along with some isolated, sparsely populated northern regions of New Hampshire and Vermont. New England is one of the U.S. Census Bureau's nine regional divisions and the only multi-state region with clear, consistent boundaries. It maintains a strong sense of cultural identity, although the terms of this identity are often contrasted, combining Puritanism with liberalism, agrarian life with industry, and isolation with immigration.