I think the answer would most likely be the West region because in my research description I have found that the west is so politically diverse and a very large region.
Hope my answer is correct and helps! :O
Answer: North Dakota
Explanation: The geographic center of North America is set near Rugby, North Dakota 48°10′N 100°10′W, though this has no official status.
I think the answer is "physical"
hope this helps ! :D