In Huck Finns time, which was the 1800's slavery was very popular. Many farm owners and plantation owners had slaves to work for them. The slaves were treated really badly. Huck Finn on the other hand, was friendly with them. The book Huck Finn by Mark Twain is an American classic that is a symbol of carefree youth. Throughout the book there are serious themes intertwined with the mischievous antics of adolescence. One of the broadest themes represented in the book Huck Finn by Mark Twain touches on freedom through the characters of Huck and Jim. Huck is a 13-year-old, who gets into trouble all the time; he is semi-literate boy