Answer: Benin
Passing along the border of Benin, the river enters Nigeria where it turns south toward the Atlantic. The Niger delta, where the river meets the Atlantic ocean, forms an important ecological and commercial zone.
It runs in a crescent through Mali, Niger, on the border with Benin and then through Nigeria, discharging through a massive delta, known as the Niger Delta or the Oil Rivers, into the Gulf of Guinea in the Atlantic Ocean.
