Short answers, pulled from the story.
Independent estimates for 2022 place the population of Lagos at roughly 28 million people. The 2006 federal census data suggested a figure of about 9 million, while the Lagos State Government claims the number is closer to 16 million. Lagos is the most populous urban area on the African continent.
Lagos emerged in the 15th century as a home to the Awori people, an Ijebu subgroup of the Yoruba. These early settlers lived along the coastal line and settled on a farmstead known as Ereko, which translates to Eko in the local language. Before the 15th century, these settlers lived in an area now contained within the present-day Local Government Areas of Lagos Island, Eti-Osa, Amuwo-Odofin, and Apapa.
Lagos generates around 30 to 35% of Nigeria's entire GDP. The city serves as the financial and commercial heart of the nation and is home to the four largest banks in West and Central Africa. These financial institutions, along with the insurance industry, are predominantly headquartered on Victoria Island and Lagos Island.
The city has a tropical savanna climate with three months of rain and an annual rainfall that is not high enough for tropical monsoon classification. The wettest month is June and the driest month is January. Sea level rise is being exacerbated by subsidence occurring at up to 1 centimetre per year.
The Lekki-Ikoyi Link Bridge is the first cable-stayed bridge built in Nigeria. The Third Mainland Bridge passes through densely populated mainland suburbs to the Lagos Lagoon. These structures are part of the city's extensive road network in West Africa.