Egypt — nile borders (1): SudanEgyptSudan — nile borders (6): Central African Republic, Chad, Egypt, Eritrea, Ethiopia, South SudanSudanSouth Sudan — nile borders (4): Central African Republic, DR Congo, Ethiopia, SudanSouth SudanEthiopia — nile borders (3): Eritrea, South Sudan, SudanEthiopiaEritrea — nile borders (2): Ethiopia, SudanEritreaMauritania — sahel borders (2): Mali, SenegalMauritaniaMali — sahel borders (6): Burkina Faso, Guinea, Ivory Coast, Mauritania, Niger, SenegalMaliNiger — sahel borders (3): Burkina Faso, Chad, MaliNigerChad — sahel borders (3): Central African Republic, Niger, SudanChadBurkina Faso — sahel borders (4): Ghana, Ivory Coast, Mali, NigerBurkina FasoSenegal — guinea_coast borders (3): Guinea, Mali, MauritaniaSenegalGuinea — guinea_coast borders (5): Ivory Coast, Liberia, Mali, Senegal, Sierra LeoneGuineaSierra Leone — guinea_coast borders (2): Guinea, LiberiaSierra LeoneLiberia — guinea_coast borders (3): Guinea, Ivory Coast, Sierra LeoneLiberiaIvory Coast — guinea_coast borders (5): Burkina Faso, Ghana, Guinea, Liberia, MaliIvory CoastGhana — guinea_coast borders (2): Burkina Faso, Ivory CoastGhanaCentral African Republic — congo_basin borders (5): Chad, Congo, DR Congo, South Sudan, SudanCentral African RepublicDR Congo — congo_basin borders (8): Angola, Burundi, Central African Republic, Congo, Rwanda, South Sudan, Tanzania, ZambiaDR CongoCongo — congo_basin borders (4): Angola, Central African Republic, DR Congo, GabonCongoGabon — congo_basin borders (2): Congo, Equatorial GuineaGabonEquatorial Guinea — congo_basin borders (1): GabonEquatorial GuineaAngola — congo_basin borders (4): Congo, DR Congo, Namibia, ZambiaAngolaRwanda — great_lakes borders (3): Burundi, DR Congo, TanzaniaRwandaBurundi — great_lakes borders (3): DR Congo, Rwanda, TanzaniaBurundiTanzania — great_lakes borders (6): Burundi, DR Congo, Malawi, Mozambique, Rwanda, ZambiaTanzaniaZambia — great_lakes borders (7): Angola, DR Congo, Malawi, Mozambique, Namibia, Tanzania, ZimbabweZambiaMalawi — great_lakes borders (3): Mozambique, Tanzania, ZambiaMalawiNamibia — zambezi borders (3): Angola, Botswana, ZambiaNamibiaBotswana — zambezi borders (2): Namibia, ZimbabweBotswanaZimbabwe — zambezi borders (3): Botswana, Mozambique, ZambiaZimbabweMozambique — zambezi borders (5): Malawi, Tanzania, Zambia, Zimbabwe, MadagascarMozambiqueMadagascar — zambezi borders (1): MozambiqueMadagascar