SFRT-FRENCHY,
The ring gives the wearer the power to see into the minds of the wearers of the other rings of power and to control them. Sauron, who created the master ring, had a hand in the making of the other rings of power, which were held by elves, men, and dwarves. When his designs became apparent, the elves hid their rings, but the men who held the others were ensnared, and became Sauron's greatest servants. It helps to read The Silmarillion which explains the origins of Sauron and Gandalf. They are not really wizards, but angelic beings created by the One (Illuvatar), at the beginning of time. It is they who helped shape the world. They are bound to the world and the beings of their order helped fashion all life on it, except for elves and men, who are the Children of Illuvatar. They were forbidden to interfere with the wills of men and elves, but one of the highest of these beings, Morgoth, rebelled and sought to dominate the world. He seduced many of the lesser orders to his service. One of the mightest of his servants was Sauron. It was Morgoth who created the orcs (goblins). He trapped some of the first elves to appear in the world and, in violation of the will of Illuvatar, changed them into the race of orcs.
After Morgoth was defeated and cast from the world, Sauron went into hiding, reappearing in a later age feigning friendship to the elves. It was then that he helped the elves in the forging of the rings of power, whose purpose was to heal and bring peace and happiness. Sauron betrayed the elves when he forged the One Ring.
Anyone with a great power of will can use the ring to dominate the will of others. Those, like Gandalf, Elrond, and Galadriel, who have great power of their own can enhance that power with the ring. But ultimately, Sauron's malice, inherent in the ring, will overthrow them, and they will emerge as a new Dark Lord.
Clear enough?
Shuckins
