I want to know the answer to the following question:
What invention, for which he is primarily known, did Eli Whitney develop in New Haven?
All the background I'm provided with is that "The city struck fortune in the late 18th century with the inventions and industrial activity of Eli Whitney, a Yale graduate who remained in New Haven to develop the cotton gin and establish a gun-manufacturing factory in the northern part of the city near the Hamden town line.". Is that enough to answer the question?