Dwarves are not heroes, but calculating folk with a great idea of the value of money; some are tricky and treacherous and pretty bad lots; some are not, but are decent enough people like Thorin and Company, if you don’t expect too much.
Think of it like this
Internal: A force inside yourself
External: A force outside of yourself
So if there an external force, it’s a force from outside so an example would be bullying. You wouldn’t want to go where you are being bullied so that would be an outside force affecting you.
I would say comparative. good luck :)
It would differ because of the way of writing. Such as the diary of Anne frank to the play of her diary. The play used different writing elements such as actions, narrating, and dramatic irony. Hope this helped!