Complex sentence: He became perhaps the best-known preacher in Britain and America during the 18th century, and because he traveled through all of the American colonies and drew great crowds and media coverage, he was one of the most widely recognized public figures in colonial America.
Split into simpler sentences: He became perhaps the best-known preacher in Britain and America during the 18th century. Because he travelled through all of the American colonies and drew great crowds and media coverage, he was one of the most widely recognised public figures in colonial America.