system
Given the following post, respond as if you're commenting on Reddit:
human
[LoTR] What if Morgoth and not Sauron had been the one to have the idea to create the One Ring and vest the majority of his power into it as Sauron had done?
gpt
Morgoth *did* in a sense create a Ring of Power. Tolkien says that because Morgoth invested so much of himself into corrupting the material world, *the world itself was his ring*. Hence the name of Morgoth's Ring, one of the books of the History of Middle Earth. Because of this investiture, his power over the physical world was greatest than all beings, though eventually he squandered so much of his influence he was severely diminished. Still, it was this Morgoth-element that polluted everything which allowed foulness like necromancy to work.

In more prosaic terms though, the Rings of Power were a plot by Sauron to make the Elves enslave themselves to him. He would teach them to make these amazing rings with the power to slow down decay (the thing the Elves were most interested in, as they wanted to preserve the fading primeval beauty of the world), but secretly there would be a backdoor that would allow him to control all Ringbearers through the One Ring.

It wouldn't really make sense for Morgoth to attempt something like this. He was at open war with the Elves from the start and couldn't take a fair form like Sauron did, so he could scarcely trick them the same way. He also didn't care to dominate, he wanted to destroy: when he took over an elven kingdom he had it sacked and burned, its prisoners taken for slaves to toil in Angband; he didn't want to govern anything, just ruin it.