Thomas Jefferson in the context of "Thomas Jefferson Building"

The separation of church and state is a philosophical and jurisprudential concept for defining political distance in the relationship between religious organizations and the state. Conceptually, the term refers to the creation of a secular state (with or without legally explicit church-state separation) and to disestablishment, the changing of an existing, formal relationship between the church and the state. The concept originated among early Baptists in America. In 1644, Roger Williams, a Baptist minister and founder of the state of Rhode Island and the First Baptist Church in America, was the first public official to call for "a wall or hedge of separation" between "the wilderness of the world" and "the garden of the church." Although the concept is older, the exact phrase "separation of church and state" is derived from "wall of separation between Church & State," a term coined by Thomas Jefferson in his 1802 letter to members of the Danbury Baptist Association in the state of Connecticut. The concept was promoted by Enlightenment philosophers such as John Locke.

In a society, the degree of political separation between the church and the civil state is determined by the legal structures and prevalent legal views that define the proper relationship between organized religion and the state. The arm's length principle proposes a relationship wherein the two political entities interact as organizations each independent of the authority of the other. The strict application of the secular principle of laïcité is used in France. In contrast, societies such as Denmark and England maintain the constitutional recognition of an official state church; similarly, other countries have a policy of accommodationism, with religious symbols being present in the public square.

The Founding Fathers of the United States, referred to as the Founding Fathers or the Founders by Americans, were a group of late-18th-century American revolutionary leaders who united the Thirteen Colonies, oversaw the War of Independence from Great Britain, established the United States of America, and crafted a framework of government for the new nation.

The Founding Fathers include those who wrote and signed the United States Declaration of Independence, the Articles of Confederation, and the Constitution of the United States, certain military personnel who fought in the American Revolutionary War, and others who greatly assisted in the nation's formation. The single person most identified as Father of the United States is George Washington, commanding general in the American Revolution and the nation's first president. In 1973, the historian Richard B. Morris identified seven figures as key founders, based on what he called the "triple tests" of leadership, longevity, and statesmanship: John Adams, Benjamin Franklin, Alexander Hamilton, John Jay, Thomas Jefferson, James Madison, and Washington.

The Declaration of the Rights of Man and of the Citizen (French: Déclaration des droits de l'Homme et du citoyen de 1789), set by France's National Constituent Assembly in 1789, is a human and civil rights document from the French Revolution; the French title can be translated in the modern era as "Declaration of Human and Civil Rights". Inspired by Enlightenment philosophers, the declaration was a core statement of the values of the French Revolution and had a significant impact on the development of popular conceptions of individual liberty and democracy in Europe and worldwide.

The declaration was initially drafted by Marquis de Lafayette with assistance from Thomas Jefferson, but the majority of the final draft came from Abbé Sieyès. Influenced by the doctrine of natural right, human rights are held to be universal: valid at all times and in every place. It became the basis for a nation of free individuals protected equally by the law. It is included at the beginning of the constitutions of both the French Fourth Republic (1946) and French Fifth Republic (1958) and is considered valid as constitutional law.

Nullification, in United States constitutional history, is a legal theory that a state has the right to nullify, or invalidate, any federal laws that they deem unconstitutional with respect to the United States Constitution (as opposed to the state's own constitution). There are similar theories that any officer, jury, or individual may do the same. The theory of state nullification has never been legally upheld by federal courts, although jury nullification has.

The theory of nullification is based on a view that the states formed the Union by an agreement (or "compact") among the states, and that as creators of the federal government, the states have the final authority to determine the limits of the power of that government. Under this, the compact theory, the states and not the federal courts are the ultimate interpreters of the extent of the federal government's power. Under this theory, the states therefore may reject, or nullify, federal laws that the states believe are beyond the federal government's constitutional powers. The related idea of interposition is a theory that a state has the right and the duty to "interpose" itself when the federal government enacts laws that the state believes to be unconstitutional. Thomas Jefferson and James Madison set forth the theories of nullification and interposition in the Kentucky and Virginia Resolutions in 1798.

The Declaration of Independence, formally The unanimous Declaration of the thirteen united States of America in the original printing, is the founding document of the United States. On July 4, 1776, it was adopted unanimously by the Second Continental Congress, who were convened at Pennsylvania State House, later renamed Independence Hall, in the colonial city of Philadelphia. These delegates became known as the nation's Founding Fathers. The Declaration explains why the Thirteen Colonies regarded themselves as independent sovereign states no longer subject to British colonial rule, and has become one of the most circulated, reprinted, and influential documents in history.

The American Revolutionary War commenced in April 1775 with the Battles of Lexington and Concord. Amid the growing tensions, the colonies reconvened the Congress on May 10. Their king, George III, proclaimed them to be in rebellion on August 23. On June 11, 1776, Congress appointed the Committee of Five (John Adams, Benjamin Franklin, Thomas Jefferson, Robert R. Livingston, and Roger Sherman) to draft and present the Declaration. Adams, a leading proponent of independence, persuaded the committee to charge Jefferson with writing the document's original draft, which the Congress then edited. Jefferson largely wrote the Declaration between June 11 and June 28, 1776. The Declaration was a formal explanation of why the Continental Congress voted to declare American independence from the Kingdom of Great Britain. Two days prior to the Declaration's adoption, Congress passed the Lee Resolution, which resolved that the British no longer had governing authority over the Thirteen Colonies. The Declaration justified the independence of the colonies, citing 27 colonial grievances against the king and asserting certain natural and legal rights, including a right of revolution.

Thomas Jefferson's tenure as the third president of the United States began on March 4, 1801, and ended on March 4, 1809. Jefferson assumed the office after defeating incumbent president John Adams in the 1800 presidential election. The election was a political realignment in which the Democratic-Republican Party swept the Federalist Party out of power, ushering in a generation of Jeffersonian Republican dominance in American politics. After serving two terms, Jefferson was succeeded by Secretary of State James Madison, also of the Democratic-Republican Party.

Jefferson took office determined to roll back the Federalist program of the 1790s. His administration reduced taxes, government spending, and the national debt, and repealed the Alien and Sedition Acts. In foreign affairs, the major developments were the acquisition of the gigantic Louisiana Purchase from France in 1803, an embargo against trade with both Great Britain and France, and worsening relations with Britain as the United States tried to remain neutral in the midst of the Napoleonic Wars that engulfed Europe. He established a military academy, used the Navy to protect merchant ships from Barbary pirates in North Africa, and developed a plan to protect U.S. ports from foreign invasion by the use of small gunboats (a plan that proved useless when war came in 1812). He also authorized the Lewis and Clark Expedition to explore the Louisiana Territory and the Pacific Northwest.

American literature is literature written or produced in the United States of America and in the British colonies that preceded it. The American literary tradition is part of the broader tradition of English-language literature, but also includes literature produced in languages other than English.

The American Revolutionary Period (1775–1783) is notable for the political writings of Benjamin Franklin, Alexander Hamilton, Thomas Paine, and Thomas Jefferson. An early novel is William Hill Brown's The Power of Sympathy, published in 1791. The writer and critic John Neal in the early-to-mid-19th century helped to advance America toward a unique literature and culture, by criticizing his predecessors, such as Washington Irving, for imitating their British counterparts and by influencing writers such as Edgar Allan Poe, who took American poetry and short fiction in new directions. Ralph Waldo Emerson pioneered the influential Transcendentalism movement; Henry David Thoreau, the author of Walden, was influenced by this movement. The conflict surrounding abolitionism inspired writers, like Harriet Beecher Stowe, and authors of slave narratives, such as Frederick Douglass. Nathaniel Hawthorne's The Scarlet Letter (1850) explored the dark aspects of human nature, as did Herman Melville's Moby-Dick (1851). Major American poets of the 19th century include Walt Whitman, Melville, and Emily Dickinson. Mark Twain was the first major American writer to be born in the West. Henry James achieved international recognition with novels like The Portrait of a Lady (1881).

The University of Virginia (UVA or Virginia) is a public research university in Charlottesville, Virginia, United States. It was founded in 1819 by Thomas Jefferson and contains his Academical Village, a UNESCO World Heritage Site. The original governing Board of Visitors included three U.S. presidents: Jefferson, James Madison, and James Monroe, the latter as sitting president of the United States at the time of its foundation. As its first two rectors, Presidents Jefferson and Madison played key roles in the university's foundation, with Jefferson designing both the original courses of study and the university's architecture.

Located within its 1,135-acre central campus, the university is composed of eight undergraduate and three professional schools: the School of Law, the Darden School of Business, and the School of Medicine. The university has been a member of the Association of American Universities since 1904.