sentences:  The pacific coast (90%) and the northern coast (50%) of Colombia have an Afro-Colombian population that surpasses the average in comparison to any other region in the country.In the region of Cauca at the coast and in between the Magdalena river, the most traditional black population is settled.Many slaves came in through the Cauca river or through the Magdalena river if they were to come from the northern side of the country.