Sudan 41 Anglo- Egyptian ] FRONTIER HISTORY the left bank of the Nile for some 200 miles belonged to it , the right bank to Uganda. As a result of a joint a commission in 1913 the whole frontier was readjusted by a large exchange of territory, the Sudangiving up 4,700 square miles and receiving 17,000 (much ofwhich was unexplored and marshland ). On the river, Dufile was fixed on as the northernmost Uganda station, Nimule as the most southerly Sudan post. From Nimule the frontier runs eastward to Lake Rudolf, westward to the Nile-Congo divide and the Belgian frontier. Most of it has not yet been surveyed, and the whole is at present provisional only. By this exchange, the Madi, Lugwari , and Alur tribes belong to Uganda, the Bari (hitherto divided ), Toposa, and Latuka tribes to the Sudan .

Exploration and , lagging behind it, administration have since January 1, 1914, been gradually pushed eastwards from theriver tothe Lafit, Lokoia, Imatong, and Dongatolo hills ( 1914-16 ) . Sultan Lokidi, of the Latuka people, offered opposition at Tarangole, and was killed in battle in June 1917. The tribes to the east of this place are still little known . On the outbreak of the European War the tribes on the Sudan side of the new frontier raided over the border, and at the request of the Uganda Government Sudan troops from Mongalla temporarily patrolled the north ern strip of Uganda territory. The Sudan also sent a contingent to the Turkana expedition on the west of Lake Rudolf in 1915 . Uganda has now resumed the administration of her own northern territory. Much fighting took place in 1917 with the Turkana on the frontier north of the Laburr mountains , these being assisted by Abyssinian riflemen raiding from the Kibish river. Further military operations against the Turkana, in co -operation with forces from the British East Africa Protectorate, were necessary , December 1917 - June 1918. The frontier in the extreme south -east of the Sudan is disturbed, hostile natives finding here, as farther north , ready refuge over the Abyssinian frontier.

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