A direct result of the neolithic revolution is that people began living in permanent settlements, meaning they weren't considered nomads anymore - they stayed and settled in one place.
The value of enslaved African American’s increased during and after the revolutionary war as they fought in the war.
They were part of the reason that America won the revolutionary war - they left their masters to risk their lives for a country that looked down upon them originally.
Hope this helps!
They were kept from combat roles.