Question: Muse is a clan whose members live in a country located in what landform?

Context paragraphs:
Onogboko Clan: Onogboko Clan is a clan whose origin is traced to Okpe-Isoko Kingdom, Isoko-North LGA of Nigeria.  It is governed by a traditional ruler with the title Odio-ologbo, who hails from the royal family from Ushie quarter of the town.  The first and current Odio-ologbo of the Clan is His Royal Highness G.D Akporeha I, who is the custodian of all political authority over the quarters and the communities.  He is a well-known traditional ruler who was recognised and gazetted by the government of Delta State in 1996, and presented with a staff of office.  He is a member of Delta state, Ndokwa-East and Isoko Traditional Councils.

Muse (clan): The "Muse clan"' (Somali: "Reer Sheikh Muse" ) is a Somali clan.  Group members live in the northwestern Somaliland region of Somalia, the eastern Somali Region of Ethiopia, Djibouti, and Yemen.

Clan Sutherland: Clan Sutherland is a Highland Scottish clan whose traditional territory is the shire of Sutherland in the far north of Scotland.  The chief of the clan was also the powerful Earl of Sutherland, however in the early 16th century this title passed through marriage to a younger son of the chief of Clan Gordon.  The current chief is Elizabeth Sutherland who holds the title Countess of Sutherland.

Clan Gillanders: Clan Gillanders, also known in Scottish Gaelic as Clann Ghille Ainnriais, is a Scottish clan whose genealogy is preserved in the 15th-century manuscript "MS 1467".

Clan Buchanan: Clan Buchanan (Scottish Gaelic: "Na Cananaich" ] ) is an armigerous Scottish clan whose origins are said to lie in the 1225 grant of lands on the eastern shore of Loch Lomond to clergyman Sir Absalon of Buchanan by the Earl of Lennox.

Rathore: In the northern part of India, the Rathore (or Rathaur or Rathor or Rathur or Rathod or Rathour or Rahtore) is a Rajput clan whose members ruled several states.  The Rathores claim descent from the mythical Suryavansha (Solar dynasty).

Somalia: Somalia ( ; Somali: "Soomaaliya" ; Arabic: الصومال‎ ‎ "aṣ-Ṣūmāl "), officially the Federal Republic of Somalia (Somali: Jamhuuriyadda Federaalka Soomaaliya , Arabic: جمهورية الصومال الفيدرالية‎ ‎ "Jumhūrīyat aṣ-Ṣūmāl al-Fidirālīyah "), is a country located in the Horn of Africa.  It is bordered by Ethiopia to the west, Djibouti to the northwest, the Gulf of Aden to the north, the Indian Ocean to the east, and Kenya to the southwest.  Somalia has the longest coastline on Africa's mainland, and its terrain consists mainly of plateaus, plains and highlands.  Climatically, hot conditions prevail year-round, with periodic monsoon winds and irregular rainfall.

Clan Pollock: Clan Pollock is an armigerous Scottish clan whose origin lies in a grant of land on the southern bank of the River Clyde, courtesy of King David I, to the sons of Fulbert "the Saxon" from Walter fitz Alan, the 1st High Steward of Scotland, in the 12th century.  It is among the oldest recorded surnames in Scotland.  The clan is a sept of Clan Maxwell.

Clan Kerr: Clan Kerr is a Scottish clan whose origins lie in the Scottish Borders.  During the Middle Ages, it was one of the prominent border reiver clans along the present-day Anglo-Scottish border and played an important role in the history of the Border country of Scotland.

Clan Brodie: Clan Brodie is a Scottish clan whose origins are uncertain.  The first known Brodie chiefs were the Thanes of Brodie and Dyke in Morayshire.  The Brodies were present in several clan conflicts, and during the civil war were ardent covenanters.  They resisted involvement in the Jacobite uprisings, and the chief's family later prospered under the British Empire in colonial India.

Supporting paragraphs: Muse (clan) Somalia
Answer: Horn of Africa