Name this river formerly called the Zaire that  flows to the Atlantic Ocean and which flows between Brazzaville and Kinshasa, which are the capitals  of the two countries named for this river.
A widening of this river that holds Mbamu Island is the Pool Malebo. This river passes near the city   of Matadi, which is near this river's Inga Falls. One of its feeder rivers is the namesake of a deadly  virus first identified in 1976, Ebola. This river is generally considered to begin at the Boyoma Falls,  which are at the end of the Lualaba River, though this river's main tributary is the Chambeshi River.  Its mouth help forms the northern border of Angola. Name this river formerly called the Zaire that  flows to the Atlantic Ocean and which flows between Brazzaville and Kinshasa, which are the capitals  of the two countries named for this river.
A widening of this river that holds Mbamu Island is the Pool Malebo.
Congo River [prompt on Zaire River]