"A Connecticut Yankee in King Arthur's Court" by Mark Twain is a novel published in 1889. When Hank Morgan, a Connecticut engineer, receives a blow to the head, he awakens in medieval England during King Arthur's reign. Using his modern knowledge, he poses as a powerful magician and becomes the king's chief adviser. Hank attempts to modernize the past and implement democratic reforms, but faces opposition from Merlin, the nobility, and the Church in this satirical tale about progress, power, and conflicting eras.