How old the rock is
thats my answer
The U.S. federal system consits of a national government and what other government level
regional level
I would say none of the images or b but not sure which one
Answer: The Appalachian Mountain range is many regions as it stretches from from Newfoundland and Labrador, Canada, in the north to Alabama, USA, in the south.
Explanation: It's a very long mountain range, so no wonder why it spans so far. For a specific region, I guess you could say the eastern coast of the continent of North America.
