Guinean forest–savanna mosaic in the context of "South West (Nigeria)"

Kwara (Yoruba: Ìpínlẹ̀ Kwárà) is a state in Western Nigeria, bordered to the east by Kogi State, to the north by Niger State, and to the south by Ekiti, Osun, and Oyo states, while its western border makes up part of the international border with Benin. Its capital is the city of Ilorin and the state has 16 local government areas.

Of the 36 states of Nigeria, Kwara is the ninth largest in area but the sixth least populous with an estimated population of about 3.2 million as of 2016. Geographically, Kwara is split between the West Sudanian savanna in the east and the Guinean forest–savanna mosaic ecoregion in the rest of the state. Important geographic features include rivers with the Niger flowing along the northern border into Lake Jeba before continuing as the border while the Awun, Asa, Aluko, and Oyun rivers flow through the interior. In the far northwest of the state is the Borgu section of the Kainji National Park, a large national park that contains populations of grey heron, kob, hippopotamus, African bush elephant, olive baboon, and roan antelope, along with some of the last remaining West African lions on earth. In the far southwest, a small part of the Old Oyo National Park contains crowned eagle, martial eagle, African buffalo, oribi, and patas monkey populations.

Gyaman (also spelled Gyaaman or Jamang, and later known as Jaman) was a prominent precolonial Akan kingdom that flourished in parts of present-day Ghana and Ivory Coast. Established by the Bono people from the Aduana clan, Gyaman evolved into a significant political and cultural power, extending its authority across the Banda, Jaman North, Jaman South, and Bonduku regions. It is notably regarded as the origin of the Adinkra symbols, which are now central to Akan philosophy and visual culture. The kingdom served as a cultural and political crossroads between the Akan, Gur, and Mande-speaking regions, facilitating trade, diplomacy, and cultural exchange across the forest–savannah frontier. Its history was shaped by conflict with the Asante Empire and the eventual partition of its territory between the British Gold Coast and French West Africa in the late 19th century.

Niger State is a state in the North Central region of Nigeria, bordered to the east by Kaduna State and the Federal Capital Territory, to the north by Kebbi State and Zamfara State, and to the south by Kogi and Kwara states, while its western border makes up part of the international border with Benin. It is the largest state in the country by area. The state capital is Minna, and the state is divided into 25 local government areas. Other major cities include Bida, Kontagora, and Suleja.

Of the 36 states of Nigeria, Niger is the eleventh most populous with an estimated population of about 6.7 million as of 2020. Geographically, the state is split between the West Sudanian savanna in the east and the Guinean forest–savanna mosaic ecoregion in the rest of the state. The Kainji Lake as well as the Niger and Kaduna rivers are the state's major water bodies, with the River Niger flowing through from Kainji Lake through the western part of the state and forming the border with Kwara State. Niger State is also home to the Kainji, Jebba, and Shiroro Dams, which are major sources of hydroelectric power. Also situated there is Kainji National Park, the largest National Park in Nigeria, which contains Kainji Lake, the Borgu Game Reserve and the Zugurma Game Reserve.

The North Central (often hyphenated to the North-Central) is one of the six geopolitical zones of Nigeria representing the majority of the country's Middle Belt. It comprises six states – Benue, Kogi, Kwara, Nasarawa, Niger, and Plateau — in addition to the Federal Capital Territory.

The North Central stretches across the whole width of the country, from the border with Cameroon to that with Benin. In terms of the environment, the zone is dominated by the Guinean forest–savanna mosaic, with the western portion falling into the West Sudanian savanna ecoregion. Plateau State is also named for the Jos Plateau, which lies in the east-central portion of the zone.

Ebonyi (Igbo: Alaọha Ebonyi Listen) is a state in the South-East geopolitical zone of Nigeria, bordered to the north and northeast by Benue State, Enugu State to the west, Cross River State to the east and southeast, and Abia State to the southwest. Named after the Abonyi (Aboine) River—a large part of which is in the state's south—Ebonyi State was formed from parts of Abia and Enugu state in 1996 and has its capital in Abakaliki.

One of the smallest states of Nigeria, Ebonyi is the 33rd largest in area and 29th most populous with an estimated population of nearly 2.9 million as of 2016. Geographically, the state is divided between the Cross–Niger transition forests in the far south and the drier Guinean forest–savanna mosaic in the rest of the state. The other important geographical features are the Cross River and its tributary, the River Aloma, which flow along Ebonyi's southeastern and eastern borders, respectively; while fellow Cross River tributaries, the Abonyi (Aboine), Asu, and Eze Aku rivers run through the state's interior. There are other smaller rivers like Ichelle and igbe which also form boundaries between Benue and Ebonyi States to the West.

Enugu Listen (Igbo: Alaọha Enugwu (verbally pronounced as "Enugwu" by the Igbo indigenes) is a state in the South-East geopolitical zone of Nigeria, bordered to the north by the states of Benue and Kogi, Ebonyi to the east and southeast, Abia to the south, and Anambra to the west. The state takes its name from its capital and largest city, Enugu. The city acquired township status in 1917 and was called Enugwu-Ngwo. Due to the rapid expansion towards areas owned by other indigenous communities, it was renamed Enugu in 1928.

Of the 36 states, Enugu is the 29th largest in area and 22nd most populous with an estimated population of over 4.4 million as of 2016. Geographically, the state is divided between the Niger Delta swamp forests in the far south and the drier Guinean forest–savanna mosaic with some savanna in the rest of the state. Other important geographical features are the Udi-Nsukka Plateau and Ekulu River, which flows through the city of Enugu.

Ogun StateListen (Yoruba: Ìpínlẹ̀ Ògùn [ìk͡pĩ́lɛ̀ ògũ̀]) is a state in southwestern Nigeria. It is bordered to the south by Lagos State and the Bight of Benin, to the east by Ondo State, and to the north by Oyo and Osun states while its western border forms part of the national border with the Republic of Benin. The capital and largest city is Abeokuta, and the state is divided into 20 local government areas.

Of the 36 states in the country, Ogun is the 24th largest in area but among the top fifteen most populous, with an estimated population of about 6.4 million as of 2020. Geographically, the state lies primarily in the tropical Nigerian lowland forests ecoregion, although parts of the state's north transition into the Guinean forest–savanna mosaic and some of the coastal south reach the Central African mangrove ecoregion. The Ogun and Yewa rivers are the state's major waterways while the Omo Forest Reserve in the southeastern part of the state is one of the most important conservation areas in the country—home to a variety of bird species along with some of Nigeria's last remaining Nigeria-Cameroon chimpanzee and African forest elephant populations.

Kogi State is a state in the North Central region of Nigeria, bordered to the west by the states of Ekiti and Kwara, to the north by the Federal Capital Territory, to the northeast by Nasarawa State, to the northwest by Niger State, to the southwest by the states of Edo and Ondo, to the southeast by the states of Anambra and Enugu, and to the east by Benue State. It is the only state in Nigeria to border ten other states. Named for the Hausa word for river, the state was formed from parts of Benue State, Niger State, and Kwara State on 27 August 1991. The state is nicknamed the "Confluence State" as the confluence of the River Niger and the River Benue occurs next to its capital, Lokoja.

Of the 36 states of Nigeria, Kogi is the thirteenth largest in area and twentieth most populous with an estimated population of about 4.5 million as of 2016. Geographically, the state is within the tropical Guinean forest–savanna mosaic ecoregion. Important geographic features include the key rivers with the Niger flowing from the northwest and the Benue coming from the northeast before the two rivers meet in Kogi's center and bisect the state southward.

Ekiti listen(Yoruba: Ìpínlẹ̀ Èkìtì) is a state in southwestern Nigeria, bordered to the North by Kwara State for 61 km, to the Northeast by Kogi State for 92 km, to the South and Southeast by Ondo State, and to the West by Osun State for 84 km. Named for the Ekiti people—the Yoruba subgroup that makes up the majority of the state's population—Ekiti State was carved out from a part of Ondo State in 1996 and has its capital as the city of Ado-Ekiti.

One of the smallest and most educated states with the highest number of professors in Nigeria, Ekiti is the 31st largest in the area and 30th most populous with an estimated population of nearly 3.5 million as of 2022. Geographically, the state is divided between the Nigerian lowland forests in most of the state and the drier Guinean forest–savanna mosaic in the north. Among the state's nature are false acraeas, mona monkey, forest buffalo, and grey parrot populations along with one of the last remaining Nigeria-Cameroon chimpanzee populations with a troop of about 20 chimpanzees in the heavily threatened Ise Forest Reserve. In March 2022, Ekiti State became the first state in Nigeria to adopt a state tree as one of its official symbols. On World Forest Day 2022, Governor Kayode Fayemi announced that Obeche (Triplochiton scleroxylon) had been chosen as State Tree owing to its local prominence and environmental, economic and cultural significance.