【单选题】By far the most important United States export product in the eighteenth and nineteenth centuries was cotton, favored by the European textile industry over flax or wool because it was easy to process ...
A.
the European textile industry increased its demand for American export products
B.
mechanization of spinning and weaving dramatically changed the textile industry
C.
cotton became a profitable crop but was still time-consuming to process
D.
cotton became the most important American export product