Which of the following is not an outcome of the invention of
the cotton gin?

Less Slavery but slavery was not abolished completely and people still had slaves. It also helped produce more cotton faster which means more useful products like shirts, jackets, etc.

Explanation:

nations must cooperate to bring about and maintain world peace.

nations must not wage wars or commit war crimes in a desire to control other nations.

i think i know which options you have but if these aren't options let me know