Mauritania — sahel borders (1): MaliMauritaniaMali — sahel borders (3): Burkina Faso, Mauritania, NigerMaliNiger — sahel borders (5): Benin, Burkina Faso, Chad, Mali, NigeriaNigerChad — sahel borders (4): Cameroon, Central African Republic, Niger, NigeriaChadBurkina Faso — sahel borders (4): Benin, Mali, Niger, TogoBurkina FasoTogo — niger_delta borders (2): Benin, Burkina FasoTogoBenin — niger_delta borders (4): Burkina Faso, Niger, Nigeria, TogoBeninNigeria — niger_delta borders (4): Benin, Cameroon, Chad, NigerNigeriaCameroon — niger_delta borders (6): Central African Republic, Chad, Congo, Equatorial Guinea, Gabon, NigeriaCameroonDjibouti — horn borders (1): SomaliaDjiboutiSomalia — horn borders (2): Djibouti, KenyaSomaliaKenya — horn borders (3): Somalia, Tanzania, UgandaKenyaUganda — horn borders (4): DR Congo, Kenya, Rwanda, TanzaniaUgandaCentral African Republic — congo_basin borders (4): Cameroon, Chad, Congo, DR CongoCentral African RepublicDR Congo — congo_basin borders (8): Angola, Burundi, Central African Republic, Congo, Rwanda, Tanzania, Uganda, ZambiaDR CongoCongo — congo_basin borders (5): Angola, Cameroon, Central African Republic, DR Congo, GabonCongoGabon — congo_basin borders (3): Cameroon, Congo, Equatorial GuineaGabonEquatorial Guinea — congo_basin borders (2): Cameroon, GabonEquatorial GuineaAngola — congo_basin borders (4): Congo, DR Congo, Namibia, ZambiaAngolaRwanda — great_lakes borders (4): Burundi, DR Congo, Tanzania, UgandaRwandaBurundi — great_lakes borders (3): DR Congo, Rwanda, TanzaniaBurundiTanzania — great_lakes borders (8): Burundi, DR Congo, Kenya, Malawi, Mozambique, Rwanda, Uganda, 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