Question: Katagum's country was named after which river?

full_context: Document 1: Nigeria: The name Nigeria was taken from the Niger River running through the country. This name was allegedly coined in the late 19th century by British journalist Flora Shaw, she was inspired by the name of the river, in preference to terms such as "Central Sudan". The origin of the name ''Nigeria'' came from the name of the Niger River. The word ( Niger )  is an alteration of the Tuareg name egerew n-igerewen used by inhabitants along the middle reaches of the river around Timbuktu prior to 19th-century European colonialism. Egerew n-igerewen means River of the Rivers.
Document 2: Katagum: Katagum is a town, a local government area and a traditional emirate in Bauchi State of northern Nigeria. The town is located on the northern bank of the Jama'are River, which is a tributary of the Hadejia. Most of the inhabitants are Muslim, along with people from the Fulani, Guddirawa, Kanuri, Hausa, Mangawa, Bade, Karekare, Ngizim, Shirawa, or Tashenawa tribes. Chief agricultures include peanuts (groundnuts), sorghum, millet, rice (especially in the riverine fadamas, or "floodplains"), cowpeas, cotton, indigo, and gum arabic. Livestock includehorses, cattle, goats, sheep, donkeys and a lot of poultry.
Document 3: Girei: Girei is a town and local government area of Adamawa State, Nigeria. It lies on the Benue River. The dominant tribe in the area are the Fulɓe or Fulani; however, a substantial number of Bwatiye also dwell in villages such as Greng, Ntabo, and Labondo within the Girei local government area. The primary occupation of the people in the area is farming and cattle rearing. Girei is also a home to Radio Gotel.
Document 4: Nigeria: The vast majority of Muslims in Nigeria are Sunni belonging to Maliki school of jurisprudence; however, a sizeable minority also belongs to Shafi madhhab. A large number of Sunni Muslims are members of Sufi brotherhoods. Most Sufis follow the Qadiriyya, Tijaniyyah and/or the Mouride movements. A significant Shia minority exists (see Shia in Nigeria). Some northern states have incorporated Sharia law into their previously secular legal systems, which has brought about some controversy. Kano State has sought to incorporate Sharia law into its constitution. The majority of Quranists follow the Kalo Kato or Quraniyyun movement. There are also Ahmadiyya and Mahdiyya minorities.
Document 5: Takum: Takum is a Local Government Area in Taraba State, Nigeria. Its headquarters are in the town of Takum, it is created out of Wukari local government in 1975, at . Takum borders the Republic of Cameroon in the south, Ussa Local Government to the west, Donga Local government to the north, District within Takum are Abuja, kwambai, jenuwa, Rogo, Dutse, Kashimbila, Bete, Chanchanji, Bika.
Document 6: Nigeria: The name "" was taken from the Niger River running through the country. This name was coined in the late 19th century by British journalist Flora Shaw, who later married Lord Lugard, a British colonial administrator. The origin of the name "Niger", which originally applied only to the middle reaches of the Niger River, is uncertain. The word is likely an alteration of the Tuareg name "egerew n-igerewen" used by inhabitants along the middle reaches of the river around Timbuktu prior to 19th-century European colonialism.
Document 7: History of Nigeria: In 1914, the area was formally united as the Colony and Protectorate of Nigeria. Administratively, Nigeria remained divided into the Northern and Southern Provinces and Lagos Colony. Western education and the development of a modern economy proceeded more rapidly in the south than in the north, with consequences felt in Nigeria's political life ever since. Following World War II, in response to the growth of Nigerian nationalism and demands for independence, successive constitutions legislated by the British Government moved Nigeria toward self - government on a representative and increasingly federal basis. On 1 October 1954, the colony became the autonomous Federation of Nigeria. By the middle of the 20th century, the great wave for independence was sweeping across Africa. On 27 October 1958 Britain agreed that Nigeria would become an independent state on 1 October 1960.
Document 8: Guinea-Bissau: Rice is a staple in the diet of residents near the coast and millet a staple in the interior. Fish, shellfish, fruits and vegetables are commonly eaten along with cereal grains, milk, curd and whey. The Portuguese encouraged peanut production. Vigna subterranea (Bambara groundnut) and Macrotyloma geocarpum (Hausa groundnut) are also grown. Black-eyed peas are also part of the diet. Palm oil is harvested.
Document 9: Sawaba: Sawaba was an outgrowth of several sources, and passed through several name changes prior to Niger's independence from France in 1959-1960. Under first the French Union and then the French Community, the colonies of French West Africa began to develop semi-autonomous political institutions in the decade and a half of the French Fourth Republic. Territories, like Niger, were granted consultative posts, first to the colonial government of West Africa (in Dakar), and later in Territorial Assemblies. These bodies had very limited powers, limited seats for Africans, and those elected were chosen by a very restricted electorate.
Document 10: Bamako: Bamako is the nation's administrative centre. The city proper is a cercle in its own right. Bamako's river port is located in nearby Koulikoro, along with a major regional trade and conference center. Bamako is the seventh-largest West African urban center after Lagos, Abidjan, Kano, Ibadan, Dakar, and Accra. Locally manufactured goods include textiles, processed meat, and metal goods. Commercial fishing occurs on the Niger River.
Document 11: Nigeria: Everything in between the far south and the far north is savannah (insignificant tree cover, with grasses and flowers located between trees). Rainfall is more limited, to between 500 and 1,500 millimetres (20 and 60 in) per year. The savannah zone's three categories are Guinean forest-savanna mosaic, Sudan savannah, and Sahel savannah. Guinean forest-savanna mosaic is plains of tall grass interrupted by trees. Sudan savannah is similar but with shorter grasses and shorter trees. Sahel savannah consists of patches of grass and sand, found in the northeast. In the Sahel region, rain is less than 500 millimetres (20 in) per year and the Sahara Desert is encroaching. In the dry north-east corner of the country lies Lake Chad, which Nigeria shares with Niger, Chad and Cameroon.
Document 12: Nigerian nationalism: Nigerian nationalism asserts that Nigerians are a nation and promotes the cultural unity of Nigerians. Nigerian nationalism is a territorial nationalism, emphasizing a cultural connection of the people to the land -- in particular the Niger and Benue rivers. It first emerged in the 1920s under the influence of Herbert Macaulay who is considered the founder of Nigerian nationalism. It was founded because of the belief in the necessity for the people living in the British colony of Nigeria of multiple backgrounds to unite as one people in order to be able to resist colonialism. The people of Nigeria came together as they recognized the discrepancies of British policy. ``The problem of ethnic nationalism in Nigeria came with the advent of colonialism. This happened when disparate, autonomous, heterogeneous and sub - national groups were merged together to form a nation. Again, the colonialists created structural imbalances within the nation in terms of socio - economic projects, social development and establishment of administrative centres. This imbalance deepened the antipathies between the various ethnic nationalities in Nigeria (Nnoli, 1980; Y oung, 1993 and Aluko, 1998). ''The Nigerian nationalists' goal of achieving an independent sovereign state of Nigeria was achieved in 1960 when Nigeria declared its independence and British colonial rule ended. Nigeria's government has sought to unify the various peoples and regions of Nigeria since the country's independence in 1960.
Document 13: Bida Emirate: The Bida Emirate is a traditional state in Nigeria, a successor to the old Nupe Kingdom, with its headquarters in Bida, Niger State. The head of the state is the Etsu Nupe, considered the leader of the Nupe people.
Document 14: Nigeria: Modern-day Nigeria has been the site of numerous kingdoms and tribal states over the millennia. The modern state originated from British colonial rule beginning in the 19th century, and the merging of the Southern Nigeria Protectorate and Northern Nigeria Protectorate in 1914. The British set up administrative and legal structures whilst practising indirect rule through traditional chiefdoms. Nigeria became a formally independent federation in 1960, and plunged into a civil war from 1967 to 1970. It has since alternated between democratically-elected civilian governments and military dictatorships, until it achieved a stable democracy in 1999, with its 2011 presidential elections being viewed as the first to be conducted reasonably freely and fairly.
Document 15: Nigeria: In 1885, British claims to a West African sphere of influence received recognition from other European nations at the Berlin Conference. The following year, it chartered the Royal Niger Company under the leadership of Sir George Taubman Goldie. In 1900 the company's territory came under the control of the British government, which moved to consolidate its hold over the area of modern Nigeria. On 1 January 1901, Nigeria became a British protectorate, and part of the British Empire, the foremost world power at the time. In the late 19th and early 20th centuries the independent kingdoms of what would become Nigeria fought a number of conflicts against the British Empire's efforts to expand its territory. By war, the British conquered Benin in 1897, and, in the Anglo-Aro War (1901–1902), defeated other opponents. The restraint or conquest of these states opened up the Niger area to British rule.
ground_truth: Niger River
sub_queries: Katagum >> country Answer: Nigeria
The Nigeria was named for whom? Answer: Niger River