Title: Rings of Power
Content:  The Rings of Power (also known as the Great Rings) are fictional magical artefacts in J. R. R. Tolkien's writings about Middle-earth, especially his high fantasy book The Lord of the Rings. The Ruling Ring first appeared as a plot device, a magic ring in his children's book, The Hobbit; Tolkien later gave it a backstory and much greater power, as well as 19 other Rings that it could control, including the Three Rings of the Elves, Seven Rings for the Dwarves, and Nine for Men. A key story-element in The Lord of the Rings is the addictive power of the One Ring, made secretly by the Dark Lord Sauron, while the Nine Rings enslave their bearers as Ringwraiths, Sauron's most deadly servants. Proposed sources of inspiration for the Rings of Power range from Germanic legend with the ring Andvaranaut and eventually Wagner's Der Ring Des Nibelungen, 
Title: Rings of Power
Content:  fairy tales such as Snow White, which features both a magic ring and seven dwarfs. One experience which may have been pivotal was Tolkien's professional work on a Latin inscription at the temple of Nodens; he was a god-hero linked to the Irish hero Nuada Airgetlám, whose epithet is "Silver-Hand", or in Elvish "Celebrimbor", the name of the Elven-smith who made the Rings of Power. The inscription contained a curse upon a ring; and the site was called Dwarf's Hill. The Rings of Power have been described as symbolising the way that power conflicts with moral behaviour; Tolkien explores the way that different characters, from the humble gardener Sam Gamgee to the powerful Elf ruler Galadriel, the proud warrior Boromir to the Ring-addicted monster Gollum, interact with the One Ring. Tolkien stated that The Lord of the Rings was an examination of "placing power in external objects".
Title: Magic ring
Content:  J. R. R. Tolkien's fantasy novel The Hobbit was written as children's fiction, but as the story grew into The Lord of the Rings the matter expanded, borrowing from Germanic and Norse mythology for many of its themes, creatures, and names. Of twenty magical Rings of Power, four are described in some detail: The extremely powerful and dangerous "One Ring" around which the plot revolves; and three rings worn by Gandalf the wizard and the elves Elrond and Galadriel. Seven Rings of Power were given to the dwarves in an only slightly successful attempt to corrupt them. Humans prove to be more susceptible; each of the nine Nazgûl were once great lords of men who were turned to terrifying wraiths and servants of the Dark Lord Sauron by their respective rings. The sixteen rings ultimately given 
Title: Rings of Power
Content:  Hobbit was revised for the second edition to bring it into line with his portrayal in The Lord of the Rings as a being addicted to the One Ring. Tolkien's conception of Ring-lore was closely linked to his development of the One Ring. He initially made Sauron instrumental in forging the Rings. He then briefly considered having Fëanor, creator of the Silmarils, forge the Rings of Power, under the influence of Morgoth, the first Dark Lord. He settled on Celebrimbor, a descendant of Fëanor, as the Ring's principal maker, under the tutelage of Sauron, Morgoth's chief servant. While writing the lore behind the One Ring, Tolkien struggled 
Title: Rings of Power
Content:  confer powers such as invisibility or flight; they can summon wish-granting djinns and dwarves; indeed they may, writes the Tolkien and feminist scholar Melanie Rawls "identify the enchanted princess, hold the tiny golden key to the secret room, give one the power to transform oneself into any form — animal, vegetable, or mineral: duck, lake, rock or tree on a plain, and so escape the ogre." As Tolkien was well acquainted with fairy tales like The Brothers Grimm's Snow White and the Seven Dwarfs, which involves a magic ring, Jeanette White from Comic Book Resources suggested that his choice "to gift seven rings of power to the Dwarf Lords of the seven kingdoms is probably no accident".
Title: Man (Middle-earth)
Content:  Kocher writes that the Rings of Power reflected the characteristics of the race that was to wear them. Those for Men "stimulated and implemented their ambition for power". Whereas the tough Dwarves resisted Sauron's domination, and the Elves hid their Rings from him, with Men his plan "works perfectly", turning the ambitious kings into Ringwraiths, the nine Black Riders. With the One Ring to rule them, Sauron gains complete control over them, and they become his most powerful servants. Kocher comments that for Tolkien, the exercise of personal free will, the most precious gift, is "the distinguishing mark of his 
Title: Magic ring
Content:  dwarves and men were created in a joint effort by the elves and Sauron. The three rings kept by the elves were forged by the elves alone, and Sauron had no direct hand in their creation. Sauron forged the One Ring in secret, with the intention that it would be a "master ring" and give him control over all the other rings, but was not completely successful in this aim. Only the One Ring makes any appearance in The Hobbit, and then it is only known as a magic ring which makes the wearer invisible; its much larger and darker significance is not revealed until The Lord of the Rings. The history of the Rings of Power is described in its known entirety in The Silmarillion, in "Of the Rings of Power and the Third Age".
Title: Rings of Power
Content:  The Rings of Power were forged by the Elven-smiths of the Noldorin settlement of Eregion. The smiths were led by Celebrimbor, the grandson of Fëanor, the greatest craftsman of the Noldor, working with Dwarves from Khazad-dûm (Moria) led by his friend Narvi. Sauron, powerful and ambitious, but humiliated by the fall of his evil master Morgoth at the end of the First Age, had evaded the summons of the godlike Valar to surrender and face judgment; he chose to remain in Middle-earth and seek dominion over its people. In the Second Age, he arrived disguised as a handsome emissary of the Valar named Annatar, the Lord of 
Title: Rings of Power
Content:  by Elendil and his sons Isildur and Anárion, established the realms of Arnor and Gondor. Together with the Elves of Lindon, they formed a last alliance against Sauron, and emerged victorious. Isildur cut the One Ring from Sauron's hand and kept it, refusing to destroy it; he was later killed in an ambush, and the Ring was lost for centuries. During this time, the Elves were able to use the Three Rings, while the Nine given to the leaders of Men corrupted their wearers and turned them into the Nazgûl. The Seven given to the Dwarves failed to subject them directly to Sauron's will, but ignited 
Title: Addiction to power in The Lord of the Rings
Content:   In J. R. R. Tolkien's fantasy work The Lord of the Rings, the One Ring was forged by the Dark Lord Sauron in the fires of Mount Doom during the Second Age to gain dominion over the free peoples of Middle-earth. He intended it to control those who wore any of the other Rings of Power. Since they were powerful, he had to put much of his own power as a Maia into the Ring to achieve this. When Sméagol saw the Ring that his friend Déagol had found in the River Anduin, he killed Déagol to get it, and used the Ring's power of invisibility: "to find out secrets, and he put his knowledge to crooked and malicious uses. He became sharp-eyed and keen-eared for all that was hurtful. The ring had given him power according to his stature. ... he became very unpopular and ... they called him Gollum." The wizard Gandalf explains that Gollum was wholly corrupted by and addicted to the Ring: "He hated it and loved it, as he hated and loved himself. He could not get rid of it. He had no will left in the matter."

Question: who has a ring of power in lotr?
Answer: Sauron.