Which did not contribute to the rise of "King Cotton"?

Question

Quizplus · Accepted Answer

The rise of "King Cotton" was primarily due to Eli Whitney's invention of the cotton gin, which made cotton processing more efficient, the suitable soils and climate of the new Southwest for cotton cultivation, and the movement and utilization of slave labor to meet the labor-intensive demands of cotton farming. Declines in slave populations did not drive the rise of "King Cotton"; instead, the demand for cotton and the invention of the cotton gin increased the demand for slave labor in the United States.

Which Did Not Contribute to the Rise of "King Cotton