It's C
The north had the money, the people, and the industrial power to branch out the railroad networks. So following markets and money. The north built networks to the west.
The south in contrast was did not have the capacity to construct as much railroads as the north did so therefore there was less western expansion. As well the south had more interests building canals and shipping product of the states to England.
He helped to draft the Constitution of 1824 and was a major influence in the addition of a general colonization provision. Seguín assisted Stephen F. Austin in choosing land for the first colony of American settlers to immigrate to Texas. He later supported the Texas Revolution, providing political as well as material support.
Advances in technology, new industries, growth of cities and new forms of transportation.
It's true you had cotton wheat and lots of cash crops
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