West Africa West Africa West Africa is the westernmost region of Africa. West Africa has been defined as including 17 countries: Benin, Burkina Faso, the island nation of Cape Verde, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, the islands of Saint Helena, Ascension and Tristan da Cunha, Senegal, Sierra Leone and Togo. The population of West Africa is estimated at about /1e6 round 0 million people as of . Studies of human mitochondrial DNA suggest that all humans share common ancestors from Africa, originated in the southwestern regions near the coastal border of Namibia and Angola at the
Portuguese dialects dialects of Brazil, Africa, and Asia derived mostly from those of central and southern Portugal. In the Portuguese town of Barrancos (in the border between Extremadura, Andalucia and Portugal), a dialect of Portuguese heavily influenced by Southern Spanish dialects is spoken, known as "barranquenho". Brazilian dialects are divided into northern and southern groups, the northern dialects tending to slightly more open pre-stressed vowels. The economic and cultural dominance of São Paulo and Rio de Janeiro in Brazil made their dialects end up having some influence on the rest of the country. However, migration from the Northern states to the Southern