The Effect of Early 19^th-Century Industrialization on the Trans-Allegheny West

The effect of early 19^th-century industrialization on the trans-Allegheny West was to encourage

A) specialized, cash-crop agriculture.
B) slavery in the trans-Allegheny West.
C) self-sufficient farming.
D) farmers to abandon agriculture and sell their land to move to cities for better economic opportunities.
E) higher tariffs.