The might of Hyarmendacil no enemy dared to contest during the remainder of his long reign. He was king for one hundred and thirty-four years, the longest reign but one of all the Line of Anárion. In his day Gondor reached the summit of its power. The realm then extended north to the field of Celebrant and the southern eaves of Mirkwood; west to the Greyflood; east to the inland Sea of Rhûn; south to the River Harnen, and thence along the coast to the peninsula and haven of Umbar. The Men of the Vales of Anduin acknowledged its authority; and the kings of the Harad did homage to Gondor, and their sons lived as hostages in the court of its King. Mordor was desolate, but was watched over by great fortresses that guarded the passes.
The Lord of the Rings Appendix A, Section 1: The Númenórean Kings
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‘Eriador was of old the name of all the lands between the Misty Mountains and the Blue; in the South it was bounded by the Greyflood and the Glanduin that flows into it above Tharbad.
‘At its greatest Arnor included all Eriador, except the regions beyond the Lune, and the lands east of Greyflood and Loudwater, in which lay Rivendell and Hollin.
The Lord of the Rings Appendix A, Section 1: The Númenórean Kings
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At the end of the Third Age the part played by the Hobbits in the great events that led to the inclusion of the Shire in the Reunited Kingdom awakened among them a more widespread interest in their own history; and many of their traditions, up to that time still mainly oral, were collected and written down.
The Lord of the Rings Prologue: Note on the Shire Records
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In Gondor the King Elessar now ruled, and in Arnor also. In all the lands of those realms of old he was king, save in Rohan only; for he renewed to Éomer the gift of Cirion, and Éomer took again the Oath of Eorl.
The Lord of the Rings Appendix A, Section 2: The House of Eorl
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Without haste and at peace they passed into Anórien, and they came to the Grey Wood under Amon Dîn; and there they heard a sound as of drums beating in the hills, though no living thing could be seen. Then Aragorn let the trumpets be blown; and heralds cried:
‘Behold, the King Elessar is come! The Forest of Drúadan he gives to Ghân-buri-Ghân and to his folk, to be their own for ever; and hereafter let no man enter it without their leave!’
Then the drums rolled loudly, and were silent.
The Lord of the Rings Book Six, Chapter 6: Many Partings
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And the King pardoned the Easterlings that had given themselves up, and sent them away free, and he made peace with the peoples of Harad; and the slaves of Mordor he released and gave to them all the lands about Lake Núrnen to be their own.
The Lord of the Rings Book Six, Chapter 5: The Steward and the King
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In the North also there had been war and evil. The realm of Thranduil was invaded, and there was long battle under the trees and great ruin of fire; but in the end Thranduil had the victory. And on the day of the New Year of the Elves, Celeborn and Thranduil met in the midst of the forest; and they renamed Mirkwood Eryn Lasgalen, The Wood of Greenleaves. Thranduil took all the northern region as far as the mountains that rise in the forest for his realm; and Celeborn took all the southern wood below the Narrows, and named it East Lórien; all the wide forest between was given to the Beornings and the Woodmen.
The Lord of the Rings Appendix B, Section 2: The Third Age
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