Which two crops increase the demand for slave labor?

The two crops that significantly increased the demand for slave labor were sugar and cotton. The sugar plantations, primarily in the Caribbean, required a large workforce for cultivation and processing, driving the demand for enslaved Africans. Similarly, the cotton boom in the southern United States, fueled by the invention of the cotton gin, led to a drastic increase in the need for enslaved labor to meet the demands of the textile industry.