Mark Twain spent many years living near the Mississippi River. His dream came true when he piloted a steamboat. Later he wrote about growing up in Hannibal, Missouri and the many adventures he had. This worksheet has a brief biography of Mark Twain aka Samuel Clemens. At the bottom of the page, following the informational text, are 4 multiple choice reading comprehension questions. They assess: Main Idea, Finding Details, and Drawing Conclusions. There's no answer key, but they happen to be: a, b,b,c.