Oyo, usually referred to as Oyo State to distinguish it from the city of Oyo, is an inland state in south-western Nigeria, with its capital at Ibadan. It is bounded in the north by Kwara State, in the east by Osun State, in the south by Ogun State and in the west partly by Ogun State and partly by the Republic of Benin.
Oyo State was formed in 1976 from Western State, and included Ọsun State, which was split off in 1991. Oyo State is homogenous, mainly inhabited by the Yoruba ethnic group who are primarily agrarian but have a predilection for living in high-density urban centers. The indigenes mainly comprise the Oyos, the Oke-Oguns, the Ibadans and the Ibarapas, all belonging to the Yoruba family and indigenous city in Africa. Ibadan had been the centre of administration of the old Western Region since the days of British colonial rule.
Other notable cities and towns in Ọyọ State include Ọyọ, Ogbomọsọ, Isẹyin, Kisi, Okeho, Saki, Eruwa, Iroko, Lanlate, Oje-Owode, Sepeteri, Ilora, Awe, Ilero, Igbeti, Igboho and Igbo-Ora, Otu.

Ondo State was created in 1976 from the former Western State and it originally included what is now Ekiti State, which was carved out in 1996 by late General Sanni Abacha. The state covered the total area of the former Ondo Province, created in 1915 with Akure as the provincial headquarters. Ondo State took off formally on 1st April, 1976, consisting of the nine administrative divisions of the former Western State, which then were Akoko, Akure, Ekiti Central, Ekiti North, Ekiti South, Ekiti West, Okitipupa, Ondo and Owo.
Agriculture is the mainstay of the economy, and the chief products are cotton and tobacco from the north, cacao from the central part, and rubber and timber (teak and hardwoods) from the south and east; palm oil and kernels are cultivated for export throughout the state. Ondo is Nigeria’s chief cocoa-producing state. Other crops include rice, yams, corn (maize), coffee, taro, cassava (manioc), vegetables, and fruits. Traditional industries include pottery making, cloth weaving, tailoring, carpentry, and blacksmithing. Mineral deposits include kaolin, pyrites, iron

Located in south-west geopolitical zone of Nigeria, Ogun State – “Gateway State” was created in 1976 with Abeokuta as the state capital, comprises the old Abeokuta and Ijebu provinces. The state is divided into twenty local government areas which include Abeokuta-North, Abeokuta-South, Ado-Odo/Ota, Egbado-North, Egbado-South, Ewekoro, Ifo, Ijebu-East, Ijebu-North, Ijebu-Northeast, Ijebu-Ode, Ikenne, Imeko-Afon, Ipokia, Obafemi-Owode, Ogun Waterside, Odeda, Odogbolu, Remo-North,

Osun is an inland state in south-western Nigeria. Its capital is Osogbo.
The modern Osun State was created in August 27, 1991 from part of the old Oyo State. The state’s name is derived from the River Osun, the venerated natural spring that is the manifestation of the Yoruba goddess of the same name.
Important cultural events in the state include the Ori Oke and Egungun festival in Iragbiji, Olojo in Ife and the Osun Osogbo festival.
Every year, adherents and non-adherents of Osun, one of the Orisa (the traditional deities of the Yoruba people), travel from all over the world to attend the annual Osun-Osogbo festival in August. Visitors include nationals of Brazil, Cuba, Trinidad, Grenada, and other nations in the Americas with a significant Yoruba cultural heritage. Annual traditional festivities and invocations of the Osun goddess are held along the banks of the river bearing her name into which – according to Yoruba Oratory traditions – she transformed.
Ọsun-Ọsogbo Groove, the shrine of the annual rites of the deity and an important artistic center, was declared a World Heritage Site in 2005

Ekiti State is situated entirely within the tropics. It is located between longitudes 40°51′ and 50°451′ East of the Greenwich meridian and latitudes 70°151′ and 80°51′ north of the Equator. It lies south of Kwara and Kogi State, East of Osun State and bounded by Ondo State in the East and in the south, with a total land Area of 5887.890sq km.
Ekiti State has 16 Local Government Councils. By 1991 Census, the population of Ekiti State was 1,647,822 while the estimated population upon its creation on October 1st 1996 was put at 1,750,000 with the capital located at Ado-Ekiti. The 2006 population census by the National Population Commission put the population of Ekiti State at 2,384,212 people.
Mainly an upland zone rising over 250 metres above sea level, Ekiti has a rhythmically undulating surface. The landscape consists of ancient plains broken by steep-sided outcropping dome rocks. These rocks may occur singularly or in groups or ridges and the most notable of these are to be found in Efon-Alaaye, Ikere-Ekiti and Okemesi-Ekiti.
An important feature of the state is the large number of hills it possesses, which are often the site of towns in which much of the population resides. In fact, the word ‘Ekiti’ was derived from the local term for hill.

Located in south-west geopolitical zone of Nigeria, Lagos State was created on May 27th 1967 by virtue of the state (Creation and Transitional Provisions) Decree 14 of 1967, which restructured Nigeria into a Federation of twelve States then.

The state is divided into twenty local Government areas which include Agege, Ajeromi-Ifelodun, Alimosho, Amuwo-Odofin, Apapa, Badagry, Epe, Eti-Osa, Ibeju-Lekki, Ifako-Ijaye, Ikeja, Ikorodu, Kosofe, Lagos Island, Lagos-Mainland, Mushin, Ojo, Oshodi-Isolo, Shomolu and Surulere.