

When Morgoth was defeated, the Uruk were confused and were easily scattered by their enemies, after which they went into hiding in the Misty Mountains, showing the dependence of Uruk on the Dark Lord. Uruk were highly dependent of Sauron in multiple ways. A similar interpretation of 'Trolls' was made by Treebeard, informing the Hobbits that they were a failed copy of Ents, although again, this isn't mentioned by any other source. However in Lord of the Rings, Treebeard's account may have been his understanding of it, as it contradicts Tolkien's writings in The Silmarillion. However, the Ent Treebeard tells the Hobbits, Merry and Pippin, that Uruks were an attempt by Morgoth to copy the Elves. Morgoth created Uruk by breeding Elves he had captured and corrupted through torturing and mutilating them.
