* The Gabra people, who live in north Kenya along the Moyale border region

It is worth nothing that Collins himself belonged to the Ó Coileáin family, who in medieval times had been princes of Uí Chonaill Gabra.

However, Ethiopian religious music also has an ancient Christian element, traced to Yared, who lived during the reign of Gabra Masqal.

He called to the Ethiopians a challenge to fight in single combat, and Gabra Endreyas, who had been a follower of Emperor Lebna Dengel's father, accepted and killed the Imam.

However, Ethiopian religious music also has an ancient Christian element, traced to Yared, who lived during the reign of Gabra Masqal.

His son Abba Chabsa became a Christian, and adopted the name Gabra Madhen, and served the Ethiopian who held the fief.

In the general view of Oromo people's role in Ethiopia, Ras Gobana Dacche is a famous Oromo figure who led the development of modern Ethiopia and the political and miliatary incorporation of more territories into Ethiopian borders.

Another famous leader of Ethiopia with Oromo descent was Ras Makonnen Woldemikael Gudessa, the governor of Harar who served as the top general in the First Italo – Ethiopian War, playing a key role at the Battle of Adwa.

**** Tulama Oromo, who live in the Oromia Region around Addis Ababa

*** The Guji Oromo, who are inhabiting the southern part of Oromia, neighboring the Borana Guttuu and the Sidama People.

* The Borana Oromo, also known as Boraan Guttuu, who live in the Borena Zone, which includes Moyale.

* The Walloo Oromo, who are the northernmost group, and live predominantly in the Oromia Zone of the Amhara Region, as far north as Lake Ashenge, and are also found in the southern Raya Azebo woreda in the Tigray Region.

* The Marawa Oromo, who live in the Western part of the Harargee zone.

** Dagaa Oromo, who live in and east of Dire Dawa, north of Harar, and as far as the northeastern corner of the Oromia Region

*** Huumee Oromo, who live between Laaftoo and Faafam rivers-the capital is Fuunyaan biiraa Gursum

**** Akichu Oromo, Also go by the name Akisho, who have been assimilated into the neighboring Somalis

** Arsi Oromo, who primarily live in the Arsi Zone of the Oromia Region ( which is named for them ) as well as the Bale Zone

* The Humbannaa Oromo, who live south of the Ittu and west of the Erer River ;

Historically, some people among the northern Amhara community used the label " Galla " derogatorily to label Oromos as well as to label Shewan or southern Amharas who were mostly mixed with Oromo.

Often in the past, some Oromo communities used Galla to label themselves, as was exemplified by western Oromo leaders who established the " Western Galla Confederation " in the 1930s.

Lij Iyasu left the capital after little more than a month, and during this time engaged in a raid upon the Afar, who had reportedly massacred 300 of the Karayu Oromo at the village of Sadimalka on the Awash River.

In the 16th century, Shewa and the rest of Christian Abyssinia were conquered by the forces of Ahmed Al-Ghazi of Adal, and Shewa came under Muslim rule once again ; the region then came under pressure from the Oromo, who succeeded during the first decades of the next century in settling the areas around Shewa ( which were renamed Welega, Arsi and Wollo ).

Both the Zone and the former province are named after a subgroup of the Oromo, who inhabit both.

After eight days they crossed the river, entering the country of the Arsi Oromo, who proved hostile to Bottego.

However the north and northeastern expansion of the Oromo, who practiced mainstream traditional Waaqa, affected the growth of Islam in its early days.

The name of the town is said to have been taken from an Oromo Queen, Anko, who ruled the town during the reign of Qedami Qal.

A temporary reoccupation likely occurred by the nomadic Oromo tribe from Somalia in the late 16th century, who later abandoned the town.

However, the territory eventually became the possession of the Oromo people, who had begun settling there as early as the Mudana gadaa ( 1530-1538 ).

About 95 percent of Oromo speakers live in Ethiopia, mainly in Oromia Region.

With the creation of " Oromia " under the new system of ethnic regions, it has been possible to introduce Oromo as the medium of instruction in elementary schools throughout the region ( including areas where other ethnic groups live speaking their languages ) and as a language of administration within the region.

The ambivalent attitude regarding the holiness of the mountain is seen in the Oromo proverb: " Those who live far away worship it, those who live nearby plow it.

Such changes occurred due to the growing influence of Islam from the east and Orthodox Christianity from the north as well as power struggles between opposing Oromo communities.

However, both polities exhausted their resources and manpower in this conflict, allowing the northward migration of the Oromo into their present homelands to the north and west of Addis Ababa.

This was challenged by the mostly Christian northern people of Abyssinia, including Amhara, Tigray and north western Oromo.

Amhara is bordered by Tigray Region to the north Sudan to the west, the Afar Region to the east, and the Benishangul-Gumuz to the west and southwest, Oromo Region to the south.

To the north of the Gibe region lay the Macha tribe of the Oromo.

During the 16th century, all of the territories north of the Gojeb River were lost to the Oromo migrations.

The Oromo (, " The Powerful ";, ’ Oromo ) are an ethnic group found in Ethiopia, northern Kenya, and parts of Somalia.

The Borana Oromo, also called the Boran, are a pastoralist group living in southern Ethiopia ( Oromia ) and northern Kenya.

Forms of Oromo are spoken as a first language by more than 25 million Oromo and neighbouring peoples in Ethiopia and parts of northern Kenya.

In Kenya, the Ethnologue also lists 322, 000 speakers of Borana and Orma, two languages closely related to Ethiopian Oromo.

Within Kenya there has been radio broadcasting in Oromo ( in the Borana dialect ) on the Voice of Kenya since at least the 1980s.

* Oromo language: 25 million speakers, regional status in Ethiopia and Kenya

Particularly, the Oromo, a trans-national nation living in Ethiopia and Kenya, have a well-developed age-grade system known as the Gadaa System.

The Borana Oromo, also called the Boran, are a pastoralist ethnic group living in southern Ethiopia ( Oromia ) and northern Kenya.

Gadaa ( in older spelling: Gada ) is the traditional social stratification system of Oromo males in Ethiopia and northern Kenya ; it is also practiced by the Gedeo people of southern Ethiopia.