"A Connecticut Yankee in King Arthur's Court" is a satirical novel written by Mark Twain, published in 1889. The story follows a 19th-century American, Hank Morgan, who is mysteriously transported back in time to King Arthur's Britain. Using his modern knowledge and technology, Hank presents himself as a powerful magician and quickly rises to prominence in Arthurian society.

As Hank becomes involved in the politics and conflicts of Camelot, he attempts to modernize and reform society according to his own progressive ideals. However, his efforts are met with resistance and ultimately lead to unintended consequences.

Through humor and irony, Twain uses the novel to critique various aspects of society, including politics, religion, and the nature of power. "A Connecticut Yankee in King Arthur's Court" also explores themes of cultural clash, the conflict between tradition and progress, and the limitations of human ambition.

The novel remains a classic of American literature, beloved for its wit, imagination, and social commentary. It has inspired numerous adaptations and continues to be studied and enjoyed by readers around the world.