Answer: it's because they tried to eliminate difference in the efforts to create a homogeneous mythologized unitary polity
Explanation:
I think it's David G. Farragut, I just researched.
A speech by Confederate Vice President Alexander Stephens.
What got people to move to the west were the great plains were, is because of the gold rush. The president showed a giant crowd of people a jar of water, sand, and gold nuggets. He told them this is what they would find if they moved to the west. And of course everyone went searching for gold.