What is the theme in A Connecticut Yankee In King Arthur's Court by Mark Twain?

Science and technology is a major theme in the book. With his modern technological knowledge, Hank Morgan is able to quickly make himself one of the most powerful personages in King Arthur's realm. Hank commands respect by appealing to the superstitions that the common people usually follow. Hank presents himself as a sorcerer more powerful than Merlin, who Hank sees as holding great political influence simply because he knows how to make himself sound important in his stories. When Hank displays knowledge of astronomy in predicting the solar eclipse and knowledge of pyrotechnics by blowing up Merlin's castle, he is doing things on a large and conspicuous scale so that the common people can marvel at what they perceive to be his powers.