system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] Why wasn't Rohan a province of Éothéod in Rhovanion?

Rohan was given as a gift from Gondor to people from Éothéod who came to help Gondor during war. Why wouldn't Rohan be added to the Kingdom of Éothéod instead of becoming a separate country? Something like how Alaska is part of the USA, East and West Pakistan, or the United Kingdom of Portugal, Brazil and the Algarves.
gpt
Because they didn't have the resources to maintain a connection between the two ends of the Misty Mountains that their kingdom would have been spread across and it was feasible to relocate the entire population to the far more hospitable land of Calenardhon.