A slave is a person that belongs to another one and is treated as property. Serfs, I'm not so sure about this now, were renting the land out from the landowners.
Answer:
Materials that come straight from the source. They aren't created or altered in any way. They are used as is.
The Assembly line
correct me if i’m wrong
It’s 2 don’t me doing this i need to fill this out so i can answer but it is number 2