Poetry can be hard to understand, because of the confusing words and the layout. Like reading a book for instance. Some people find reading a book easy, and others find it harder. If you're reading a book and you find it easy to understand the words, then poetry will be easy! If you're reading a book and you find it hard to understand the words, then poetry will be harder... because of the complex words!
Because of the quotations around the statement. "GOod-mawnin' , suh," he said , lifting his cap politely. This shows someone is speaking to someone else. That means Dialect is happening.