Answer:
They made it possible to produce the thread needed for weaving much more quickly (got correct on exam)
Step-by-step explanation:
The cotton gin separated cotton seeds from cotton fiber, which was extremely time-consuming when done by hand. The spinning jenny created many strands of thread of once. Both of these machines made it possible to supply much more cotton for weaving, which inspired businessmen to build factories that could also weave the cotton into fabric more quickly.