who created it?
Dark Lord Sauron
One Ring
Dark Lord Sauron 
who got rings in lord of the rings Dwarf-lords, Men and Elf leaders why were they called the 'rings of power'? When worn, each Ring of Power gives its bearer "the prevention and slowing of "decay" of time", by granting its wearer an unnaturally long life and rendering things invisible or visible, though it can confer power only according to the measure of each possessor. how many rings were created? Ninteen who created them? All but one of the twenty rings were created by the Noldorin Elven-smiths of Eregion how many were given to the dwarfs? Seven name a few of the dwarfs who received them Durin's Folk, Firebeards, Broadbeams, Ironfists, Stiffbeards, Blacklocks, and Stonefoots how many were given to men? Nine name a few of the men who received them UNANSWERABLE how many were given to the elves? Three name a few of the elves who received them Elrond, Cirdan which ring was not created by the noldorin elven-smiths of eregion? One Ring
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One Ring [SEP] Purpose
The One Ring was forged by the Dark Lord Sauron during the Second Age to gain dominion over the free peoples of Middle-earth. In disguise as "Annatar", or "Lord of Gifts", he aided the Elven smiths of Eregion and their leader Celebrimbor in the making of the Rings of Power. He then forged the One Ring in the fires of Mount Doom. Sauron intended it to be the most powerful of all Rings, able to rule and control those who wore the others. Since the other Rings were powerful on their own, Sauron was obliged to place much of his own power into the One to achieve his purpose.