The terrain consists of coastal plain, flat to undulating plain, some hills and low mountains. Major rivers are the Couffo, the Mono, the Niger and the Oueme. Stretched between the Niger RiverNiger RiverThe name may come from Berber phrase ger-n-ger meaning river of rivers. Medieval European maps applied the name Niger to the middle reaches of the river, in modern Mali, but Quorra (Kworra) to the lower reaches in modern Nigeria, as these were not recognized at the time as being the same river.https://en.wikipedia.org › wiki › Niger_RiverNiger River - Wikipedia in the north and the Bight of Benin in the south, Benins elevation is about the same for the entire country.
