Answer:
By the mid-19th century, cotton had become America's leading export. Despite its success, the gin made little money for Whitney due to patent infringement issues. Also, his invention offered Southern planters a justification to maintain and expand slavery end as a growing number of Americans supported its abolition. The negative effects of the cotton gin were that it made the need for slaves greatly increase, and the number of slaves shot up. Plantations grew, and work became regimented and relentless.
Step-by-step explanation: