Were did the slaves of Nurn come from???

[Noxomanus]

Does anyone know?Im under the impression Saurons armies just killed everything off they defeated...

[Kuruharan]

The orcs in Morgoth's day took prisoners for slaves, and Sauron's orcs probably did the same thing.

They were also probably sent as tribute from subject peoples.

[Mornie Alantie]

They were anybody that could be made a slave pretty much, I think. Just like the rowers in the ships that after served Aragorn when the black fleet was destroyed.

[Burzdol]

They didn't use them just for slaves, orcs used them for food.

~Burzdol~