why did Mark Twain use humor in the book TOm Sawyer?

Answer 1

Humor is one of the best ways of drawing people's attention to the points that Twain wanted to make.

http://209.85.173.104/search?q=cache:LJFxuKMqxPgJ:www.glencoe.com/sec/literature/litlibrary/pdf/tom_sawyer.pdf+humor+Tom+Sawyer&hl=en&ct=clnk&cd=1&gl=us

http://www.sparknotes.com/lit/tomsawyer/