You should always include the opposition's counterargument and provide evidence as to why it is false. Strong arguments also always include a few good points from your opposition (the counterargument) to show that you have looked into and researched the other side.
"What is the name of your dog?" my friend asked.
The statement "The inhabitants of the United States have...properly speaking, no literature." is inaccurate. Literature may work through grammar syntax and semantics but there is no existing standards that would make a piece of work qualify as literature. There is only different levels and complexity but no absolute requirement.
