What Did Eli Whitney Invent
Eli Whitney invented the Cotton Gin which revolutionized the cotton industry. he received a patent for his invention in 1807. Unfortunately he never profited from his invention. You can find more information here: http://www.madehow.com/inventorbios/72/Eli-Whitney.html
Eli Whitney was the inventor of the cotton gin.It was used to take the seeds out of the cotton after picked. He was also credited for inventing interchangeable parts of the musket.