Answer:
The geographic feature that prevents the growth of railroads is the Great Smoky Mountains.
Explanation:
These mountains are higher elevation, which stops railroads from being put over them.
Answer:
Native Americans did not want to change their culture, and they did not want to give up
their land.
Explanation:
I mean, would you? some one from another country kicked you out of your home and said " hahahaaha this is mine now go out west where you have no clue how to live! hahahaha"
I believe the answer is C, immunity because (immunity) means protection or exemption from somethings, especially an obligation or penalty. So the key word in the question is protection. I hope this helps and just stating I am NOT 100% sure.