What 1794 invention increased the need for slave labor?

The correct answer is the cotton gin.

The cotton gin was invented by Eli Whitney in 1974. The machine revolutionized the processing of cotton by greatly speeding up the time that it took to remove seeds from the cotton. This invention increased the demand for cotton, which in turn increased the number of laborers needed in the cotton fields.

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

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