Answer:
d) 1860
Step-by-step explanation:
I'm going to assume that you meant the production of cotton that took place in the US.
About 3.8 million bales of cotton were produced in the USA during 1860. This was nearly the double of the production of the preceding year, i.e., 1850. This was possible only because of the slave trade & labour that occured then & this helped increase America's production to about ⅔ rd of the global sales.
Hope it helps ⚜