History of the United States (1789–1849) in the context of "19th century in the United States"

Abraham Alfonse Albert Gallatin (January 29, 1761 – August 12, 1849) was a Genevan-American politician, diplomat, ethnologist, and linguist. Often described as "America's Swiss Founding Father", he was a leading figure in the early years of the United States, helping shape the new republic's financial system and foreign policy. Gallatin was a prominent member of the Democratic-Republican Party, represented Pennsylvania in both chambers of Congress, and held several influential roles across four presidencies, most notably as the longest serving U.S. secretary of the treasury. He is also known for his contributions to academia, namely as the founder of New York University and cofounder of the American Ethnological Society.

Gallatin was born in Geneva in present-day Switzerland and spoke French as a first language. Inspired by the ideals of the American Revolution, he immigrated to the United States in the 1780s, settling in western Pennsylvania. He served as a delegate to the 1789 Pennsylvania Constitutional Convention and won election to the Pennsylvania General Assembly. Gallatin was elected to the U.S. Senate in 1793, emerging as a leading Anti-Federalist and opponent of Alexander Hamilton's economic policies. However, he was soon removed from office on a party-line vote due to not meeting requisite citizenship requirements; returning to Pennsylvania, Gallatin helped calm many angry farmers during the Whiskey Rebellion.

The XYZ Affair was a political and diplomatic episode in 1797 and 1798, early in the presidency of John Adams, involving a confrontation between the United States and Republican France that led to the Quasi-War. The name derives from the substitution of the letters X, Y, and Z for the names of French diplomats Jean-Conrad Hottinguer (X), Pierre Bellamy (Y), and Lucien Hauteval (Z) in documents released by the Adams administration.

An American diplomatic commission was sent to France in July 1797 to negotiate a solution to problems that were threatening to break out into war. The diplomats, Charles Cotesworth Pinckney, John Marshall, and Elbridge Gerry, were approached through informal channels by agents of the French foreign minister, Charles Maurice de Talleyrand-Périgord. Talleyrand demanded bribes and a loan before formal negotiations could begin. Although it was widely known that diplomats from other nations had paid bribes to deal with Talleyrand at the time, the Americans were offended by the demands, and eventually left France without ever engaging in formal negotiations. Gerry, seeking to avoid all-out war, remained for several months after the other two commissioners left. His exchanges with Talleyrand laid groundwork for the eventual end to diplomatic affairs and a start to military hostilities.