Question

What led to mass production?
cotton gin
electric battery
interchangeable parts
automation

Answer 1

I believe the answer would be cotton gin because the invention of the cotton gin was able to become more efficient in harvesting cotton. 

Answer 2

Answer:

interchangable parts

Explanation:

i also had this question and i got it correct Whitney started producing interchangeable parts which led to the assembly line and to mass production brainlest plss