Angmar

''About T.A. 1300 Sauron's shadow became stronger and evil things multiplied, heralded by the reappearance of the Nazgûl. The Witch-King of Angmar, the lord of the Nazgûl, was conducted by Sauron to gather evil men and creatures, and founded the realm in the lands north of the Ettenmoors and between the Mountains of Angmar and the Grey Mountains. Their sole purpose was destroying the fading Dúnedain of the North.''

''Soon after Angmar was founded it, waged war against the divided Dúnedain realms of Arthedain, Cardolan and Rhudaur. Rhudaur was the first kingdom to fall, and an evil Hillman seized the kingship. This chieftain allied with Angmar.''

Now under the Witch-King's control, the forces of Rhudaur and Angmar invaded Arthedain, killing Argeleb I, the king of Arthedain. However, with the aid of the armies of Cardolan, Arthedain managed to maintain a line of defence along the Weather Hills.

''In T.A. 1409 Angmar attacked Rivendell and Cardolan, besieging Rivendell and destroying all of Cardolan except for remnants of the Dúnedain who held out at the Barrow-downs and retreated into Minhiriath. Since Rhudaur had fallen under Angmar's control, Arthedain was left without any allies except for Lindon. Despite this, Arthedain struggled on for another 500 years. The last people of Cardolan died in the Great Plague, allowing Angmar to send Barrow-wights to infest the Barrow-downs.''

''In T.A. 1974 Angmar amassed its forces and launched a final assault on Arthedain. Angmar took Arthedain's capital Fornost, destroying the last kingdom of the Dúnedain. The Witch-King hunted the King Arvedui into the north, where Arvedui was attempting to hold off the armies of Angmar. When he was at the end of his resources, Arvedui fled to the bay of Forochel. The elves of Lindon sent a ship to rescue Arvedui, but it sunk in the bay of Forochel, killing the last king of Arthedain.''

''A year later, Prince Eärnur of Gondor arrived to aid Arthedain, but he was too late. His army utterly defeated the forces of Angmar in the Battle of Fornost, but the Witch-king was not slain. He escaped and fled to Mordor, but his kingdom of Angmar was no more.''

The territory of Angmar which extended east of the Misty

Mountains was subsequently overrun by the Éothéod, ancestors of the Rohirrim.

source:http://tolkiengateway.net/wiki/Angmar