Answer:
Ghrelin (I hope this helps!!)
Explanation:
It was positive because slaves could pick the cotton much faster that way, and it increased the availability of cotton for sale and for things like clothes because the cotton gin got it done so much faster
Bluetooth was invented by Dr. Jaap Haartsen in the 1990s. The purpose it serves is to connect devices to others, such as speakers, computers, printers, remotes, etc. It has impacted societies in many ways these days. One of the most major is wireless communication, which is a great asset, especially while driving.
