What was samuel slater's main contribution to textile manufacturing in new england?
getting children jobs in factories
finding work for women on farms
copying designs for machines in english factories
studying processes for assembly line workers

The correct option is: "Copying designs for machines in English factories"

Samuel Slater, born in Belper, Derbyshire, on June 9, 1768. He worked as an apprentice with a partner of Richard Arkwright. He worked with textile machinery and knew them to the letter. However, Britain was a class society, and as social advancement was difficult to achieve, Slater knew that his progress would be limited. It seemed to Slater that he would fare better on the other side of the sea, where a young and still chaotic society made the upstarts wealthy and prestigious, and even more so given that the United States offered a reward for the kind of knowledge he possessed. Slater could not take any plane with him, of course, so he took the painstaking job of memorizing every detail of the machinery; After all, the authorities had no way to register his mental belongings.