how orcs are made lotr?
Tolkien proposed several theories for the origins of orcs. ... In The Fall of Gondolin Tolkien wrote that "all that race were bred by Melkor of the subterranean heats and slime." In The Silmarillion, Orcs are East Elves (Avari) enslaved, tortured, and bred by Morgoth; they "multiplied" like Elves and Men.