Rivers State is one of the 36 states

States of Nigeria

Nigeria is currently divided into 36 states and Abuja, the federal capital territory. The states are further divided into 774 Local Government Areas....

 of Nigeria

Nigeria

Nigeria , officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. The country is located in West Africa and shares land borders with the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in...

. Its capital is Port Harcourt. It is bounded on the South by the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

, to the North by Imo

Imo State

Imo State is one of the 36 states of Nigeria and lies to the south of Nigeria with Owerri as its capital and largest city.-History:Imo State came into existence in 1976 along with other new states created under the leadership of the late military ruler of Nigeria, Murtala Muhammad, having been...

, Abia

Abia State

Abia State is a state in southeastern Nigeria. The capital is Umuahia, although the major commercial city is Aba, formerly a British colonial government outpost. The state was created in 1991 from part of Imo State and its citizens are predominantly Igbo people...

 and Anambra

Anambra State

Anambra is a state in south-eastern Nigeria. Its name is an anglicized version of the original 'Oma Mbala', the native name of the Anambra River. The Capital and the Seat of Government is Awka. Onitsha and Nnewi are the biggest commercial and industrial cities, respectively. The state's theme is...

 States, to the East by Akwa Ibom

Akwa Ibom

Akwa Ibom is a state in Nigeria named after the Qua Iboe river. It is located in the coastal South-Southern part of the country, lying between latitudes 4°321 and 5°331 North, and longitudes 7°251 and 8°251 East...

 State and to the West by Bayelsa and Delta states. Rivers state is home to a variety of ethnic groups, including Abua, Andoni, Ekpeye, Engenni, Etche, lbani, lkwerre, Kalabari, Ogba/Egbema/Ndoni, Okrika and Ogoni.

The inland part of Rivers state consists of tropical rainforest; towards the coast the typical Niger Delta

Niger Delta

The Niger Delta, the delta of the Niger River in Nigeria, is a densely populated region sometimes called the Oil Rivers because it was once a major producer of palm oil...

 environment features many mangrove swamps.

Rivers state, named after the many rivers that border its territory, was part of the Oil Rivers Protectorate from 1885 till 1893, when it became part of the Niger Coast Protectorate

Niger Coast Protectorate

The Niger Coast Protectorate was a British protectorate in the Oil Rivers area of present-day Nigeria, originally established as the Oil Rivers Protectorate in 1891 and confirmed at the Berlin Conference the following year, renamed on 12 May 1893, and merged with the chartered territories of the...

.