What was William Marcy Tweed famous for?

William Marcy Tweed, commonly known as Boss Tweed, was famous for being a powerful political figure and leader of Tammany Hall, the Democratic Party political machine in New York City during the 19th century. He was notorious for his corrupt practices, including embezzlement, bribery, and the manipulation of city contracts, which led to significant financial losses for the city. Tweed's notorious actions were eventually exposed by journalists, leading to his arrest and conviction, making him a symbol of political corruption in America.