<span>By Nationalizing the railroads & oil industry. </span>
Answer:
1976 came 2 centuries after 1776.
" It carried the natural resources of the West-minerals, timber, crops, and cattle-to eastern markets. In turn, trains brought miners, ranchers, and farmers west to develop these resources further. "
Source : jiskha.com
Hope this helps
Id say A; Government regulations because in my opinion the rest dont make sense in this situation