Title: Lagos State
Content:  Lagos State (commonly referred to simply as Lagos) is a state located in the southwestern geopolitical zone of Nigeria. The smallest in area of Nigeria's 36 states, with a population of over 15 million. Lagos State is arguably the most economically important state of the country, containing Lagos, the nation's largest urban area. It is a major financial centre and as of 2013 would have been the fifth-largest economy in Africa if it were a country. As of 2021, Lagos State's gross domestic product (GDP) of $84 billion compares with Ghana's $67 billion, Rwanda's $10.4 billion, and Kenya's $95.5 billion according to Lagos State Governor Jide Sanwo-Olu. It has the highest population density of Nigeria's states. The actual population total is disputed between the official Nigerian Census 
Title: Niger State
Content:  Niger is a state in the Middle Belt region of Nigeria and the largest state in the country. The state's capital is at Minna. Other major cities are Bida, Kontagora and Suleja. It was formed in 1976 when the then North-Western State was bifurcated into Niger State and Sokoto State. It is home to Ibrahim Babangida and Abdulsalami Abubakar, two of Nigeria's former military rulers. The Nupe, Gbagyi, Kamuku, Kambari, Gungawa, Hun-Saare, Hausa and Koro form the majority of numerous indigenous tribes of Niger State. The state is named after the River Niger. Two of Nigeria's major hydroelectric power stations, the Kainji Dam and Shiroro Dam, are located in Niger State, and the newly Zungeru Dam is also located there, the Jebba Dam is half Niger state and Kwara Sharing boundaries. The famous Gurara Falls is in Niger State, and Gurara Local Government Area is named after the Gurara River, on whose course the fall is situated. Also situated there is Kainji National Park, the largest National Park of Nigeria, which contains Kainji Lake, the Borgu Game Reserve and the Zugurma Game Reserve.
Title: Lagos State
Content:  Lagos State is a major economic centre of Nigeria. It would be the fifth largest economy in Africa if it were a country. Lagos State houses headquarters of most conglomerates and commercial banks in Nigeria. Its total generated revenue in 2017 was around ₦334 billion (equivalent to US$920 million), growing by 10.43% compared to 2016.
Title: Bayelsa State
Content:  a state in the oil-rich Niger Delta the Bayelsa State's economy is dominated by the petroleum industry. The state is the site of Oloibiri Oilfield, where oil was first discovered in Nigeria, and as of 2015 was estimated to produce 30-40% of the country's oil. The state nicknamed “Glory of all Lands” has the largest gas reservoir (18 trillion cubic feet) in Nigeria. Though being the site of one of the largest crude oil and natural gas deposits in the country contributes to local economic development, the state remains plagued by rampant poverty as well as pollution stemming from oil spills.
Title: Nigeria
Content:  Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is the most populous country in Africa; geographically situated between the Sahel to the north, and the Gulf of Guinea to the south in the Atlantic Ocean; covering an area of 923769 km2, with a population of over 211 million. Nigeria borders Niger in the north, Chad in the northeast, Cameroon in the east, and Benin in the west. Nigeria is a federal republic comprising 36 states and the Federal Capital Territory, where the capital, Abuja, is located. The largest city in Nigeria is Lagos, one of the largest 
Title: Ogun State
Content:  Ogun State is a state in southwestern Nigeria. Created in February 3rd 1976 from the former Western State. Ogun State borders Lagos State to the south, Oyo State and Osun State to the north, Ondo State, and the Republic of Benin to the west. Abeokuta is both Ogun State's capital and most populous city; other important cities in the state include Ijebu Ode, the former royal capital of the Ijebu Kingdom, and Sagamu, Nigeria's leading kola nut grower. Ogun state is covered predominantly by rain forest and has wooden savanna in the northwest. Ogun State had a total population of 3,751,140 residents as of 2006, making Ogun State the 16th most populated state in Nigeria In terms of landmass, Ogun State is the 24th largest State in Nigeria with 
Title: Petroleum politics
Content:  Petroleum in Nigeria was discovered in 1955 at Oloibiri in the Niger Delta. High oil prices were the driving force behind Nigeria’s economic growth. This has made the Nigerian economy to become the largest in Africa surpassing both Egypt and South Africa, also making it the 24th largest in the world. The Nigerian economy is heavily dependent on the oil sector, which accounts for 98% percent of export earnings and 83% of federal government revenues as well as generating 14% of its GDP. Even with the substantial oil wealth, Nigeria ranks as one of the poorest countries in the world, with a $1,000 per capita income and 
Title: Oyo State
Content:  Oyo, usually referred to as Oyo State to distinguish it from the city of Oyo, is an inland state in southwestern Nigeria. Its capital is Ibadan, the third most populous city in the country and formerly the second most populous city in Africa. Oyo State is bordered to the north by Kwara State, to the east by Osun State, and to the southwest by Ogun State and the Republic of Benin. With a projected population of 7,840,864 in 2016, Oyo State is the fifth most populous in the Nigeria. The vast majority of Oyo State residents are Yoruba, and the Yoruba language remains dominant. Nicknamed the "Pace Setter State", present-day Oyo State sits on territory formerly ruled by various kingdoms and 
Title: Nigeria
Content:  Nigeria is divided into thirty-six states and one Federal Capital Territory, which are further sub-divided into 774 local government areas. In some contexts, the states are aggregated into six geopolitical zones: North West, North East, North Central, South West, South East, and South-South. Nigeria has five cities with a population of over a million (from largest to smallest): Lagos, Kano, Ibadan, Benin City and Port Harcourt. Lagos is the largest city in Africa, with a population of over 12 million in its urban area.
Title: Nigeria
Content:  Nigeria's mixed economy is the largest in Africa, the 26th-largest in the world by nominal GDP, and 25th-largest by PPP. It is a lower-middle-income economy, with its abundant supply of natural resources, well-developed financial, legal, communications, transport sectors and Nigerian Stock Exchange. Economic development has been hindered by years of military rule, corruption, and mismanagement. The restoration of democracy and subsequent economic reforms have successfully put Nigeria back on track towards achieving its full economic potential. Next to petroleum, the second-largest source of foreign exchange earnings for Nigeria are remittances sent home by Nigerians living abroad. During the oil boom of the 1970s, Nigeria accumulated a significant foreign debt to finance major infrastructural investments. With the fall of oil prices during the 1980s 

Question: which state is the richest state in nigeria?
Answer: Lagos State.