Egypt — nile borders (2): Sinai, SudanEgyptSudan — nile borders (6): Central African Republic, Chad, Egypt, Eritrea, Ethiopia, South SudanSudanSouth Sudan — nile borders (6): Central African Republic, DR Congo, Ethiopia, Kenya, Sudan, UgandaSouth SudanEthiopia — nile borders (6): Djibouti, Eritrea, Kenya, Somalia, South Sudan, SudanEthiopiaEritrea — nile borders (3): Djibouti, Ethiopia, SudanEritreaMauritania — sahel borders (1): MaliMauritaniaMali — sahel borders (3): Burkina Faso, Mauritania, NigerMaliNiger — sahel borders (3): Burkina Faso, Chad, MaliNigerChad — sahel borders (3): Central African Republic, Niger, SudanChadBurkina Faso — sahel borders (2): Mali, NigerBurkina FasoDjibouti — horn borders (3): Eritrea, Ethiopia, SomaliaDjiboutiSomalia — horn borders (3): Djibouti, Ethiopia, KenyaSomaliaKenya — horn borders (5): Ethiopia, Somalia, South Sudan, Tanzania, UgandaKenyaUganda — horn borders (5): DR Congo, Kenya, Rwanda, South Sudan, TanzaniaUgandaCentral African Republic — congo_basin borders (5): Chad, Congo, DR Congo, South Sudan, SudanCentral African RepublicDR Congo — congo_basin borders (9): Angola, Burundi, Central African Republic, Congo, Rwanda, South Sudan, Tanzania, Uganda, 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 (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): MozambiqueMadagascarSyria — levant borders (4): Iraq, Israel, Jordan, LebanonSyriaLebanon — levant borders (2): Israel, SyriaLebanonIsrael — levant borders (4): Jordan, Lebanon, Sinai, SyriaIsraelJordan — levant borders (5): Hejaz, Iraq, Israel, Najd, SyriaJordanIraq — levant borders (4): Jordan, Kuwait, Najd, SyriaIraqSinai — levant borders (2): Egypt, IsraelSinaiHejaz — arabia borders (3): Jordan, Najd, YemenHejazNajd — arabia borders (7): The Gulf States, Hejaz, Iraq, Jordan, Kuwait, Oman, YemenNajdKuwait — arabia borders (3): Iraq, Najd, The Gulf StatesKuwaitThe Gulf States — arabia borders (3): Najd, Oman, KuwaitThe Gulf StatesOman — arabia borders (3): The Gulf States, Najd, YemenOmanYemen — arabia borders (3): Hejaz, Najd, OmanYemen