What do mountains in America Exemplify?

Answer 1

Plate tectonics. Two plates collide, and form mountains.

check these links out:

http://www.ucmp.berkeley.edu/geology/tectonics.html

http://en.wikipedia.org/wiki/Plate_tectonics

I hope that this is a science question, and not some esoteric question with an answer like "power" or "majesty" or something.