John Adams (October 30, 1735 (O.S. October 19, 1735)  – July 4, 1826) was an American Founding Father, lawyer, statesman, diplomat and political theorist. A leading champion of independence in 1776, he was the second President of the United States (1797–1801). Hailing from New England, Adams, a prominent lawyer and public figure in Boston, was highly educated and represented Enlightenment values promoting republicanism. A Federalist, he was highly influential and one of the key Founding Fathers of the United States.

Adams came to prominence in the early stages of the American Revolution. As a delegate from Massachusetts to the Continental Congress, he played a leading role in persuading Congress to declare independence and assisted Jefferson in drafting the Declaration of Independence. As a diplomat in Europe, he was a major negotiator of the eventual peace treaty with Great Britain, and chiefly responsible for obtaining important loans from Amsterdam bankers. A political theorist and historian, Adams largely wrote the Massachusetts Constitution in 1780 which soon after ended slavery in Massachusetts, but was in Europe when the federal Constitution was drafted on similar principles later in the decade. One of his greatest roles was as a judge of character: in 1775, he nominated George Washington to be commander-in-chief, and 25 years later nominated John Marshall to be Chief Justice of the United States.