What new technology made cotton king in the south in the 1800s? the assembly line, the cotton gin, mass production, or steamboats.

  The correct answer is :  The cotton gin

Explanation:  The new cotton gin technology impacted cotton growth and harvest because it quickly separated the seeds from the cotton plant. In order for the southern plantations to meet the growing demand for cotton in the 19th century, it became necessary to increase the number of slave workers and to use rhe gotton gin. The invention of the cotton gin in 1793 affected the use of labor in the south because the cotton gin processed the cotton so rapidly that farmers needed an increasing number of enslaved workers.

it increased the power of the king of england.

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