ara ▁Mountains . ▁They ▁noted ▁the ▁potential ▁commercial ▁benefits ▁of ▁the ▁area ▁to ▁Germany . ▁In ▁ 1 8 6 8 , ▁Nach t ig al ▁returned , ▁reaching ▁Lake ▁Ch ad ▁bas in ▁in ▁June ▁ 1 8 7 0 . ▁He ▁stayed ▁three ▁years ▁as ▁a ▁guest ▁of ▁the ▁Sultan ▁of ▁Born u , ▁not ing ▁the ▁groups ▁around ▁and ▁their ▁relations ▁to ▁one ▁another . ▁He ▁returned ▁to ▁Europe ▁in ▁ 1 8 7 5 ▁and ▁published ▁a ▁three - volume ▁Sah ara ▁and ▁Sud an ▁in ▁ 1 8 7 9 . ▁ ▁Col onial ▁administration ▁In ▁ 1 8 8 4 , ▁Germany ▁took ▁nom inal ▁control ▁over ▁the ▁territory . ▁They ▁sent ▁an ▁army ▁north ▁and ▁met ▁with ▁Ful ani ▁resistance . ▁With ▁the ▁fall ▁of ▁Tib ati ▁in ▁ 1 8 9 9 ▁under ▁Captain ▁Von ▁K apt z ▁and ▁Lieutenant ▁Hans ▁Domin ik , ▁the ▁area ▁was ▁sub du ed . ▁The ▁region ▁became ▁part ▁of ▁the ▁administrative ▁units ▁ruled ▁from ▁Gar ou a ▁and ▁M ora . ▁Much ▁of ▁the ▁local ▁administration ▁was ▁left ▁in ▁the ▁hands ▁of ▁the ▁l am idos . ▁The ▁Germ ans ▁placed ▁the ▁W and ala ▁and ▁the ▁K ird i ▁under ▁the ▁juris diction ▁of ▁these ▁Ful ani ▁r ul ers . ▁In ▁ 1 9 0 3 , ▁the ▁German ▁Res ident ▁at ▁Mar ou a , ▁Gra ff ▁F ug ger , ▁was ▁assass in ated ▁by ▁Y er ima ▁Must af a . ▁The ▁Germ