. ▁Another ▁area ▁of ▁high ▁density ▁is ▁the ▁Mand ara ▁Mountains , ▁a ▁legacy ▁of ▁the ▁Ful ani ▁con quest ▁of ▁the ▁past , ▁in ▁the ▁Diam ar é ▁plain , ▁and ▁at ▁the ▁Log one - Ch ari ▁confl u ence ▁and ▁up ▁to ▁Lake ▁Ch ad . ▁The ▁remainder ▁of ▁the ▁province ▁is ▁moder ately ▁populated , ▁and ▁the ▁Log one ▁valley ▁and ▁the ▁Ch ari ▁division ▁are ▁sp ars ely ▁populated ▁until ▁about ▁the ▁level ▁of ▁K ouss éri . ▁Since ▁independence , ▁much ▁of ▁the ▁Far ▁North ' s ▁population ▁has ▁been ▁migr ating ▁to ▁large ▁population ▁cent res , ▁particularly ▁Mar ou a ▁and ▁Gar ou a . ▁ ▁People ▁ ▁The ▁Ful ani ▁( F ul be ) ▁make ▁up ▁a ▁large ▁portion ▁of ▁the ▁Far ▁North ' s ▁population . ▁The ▁heart ▁of ▁the ▁province ▁is ▁primarily ▁Ful ani ▁territory , ▁and ▁Mar ou a ▁is ▁mostly ▁a ▁Ful ani ▁settlement . ▁They ▁also ▁occup y ▁smaller ▁pieces ▁of ▁land ▁south ▁of ▁there , ▁one ▁along ▁the ▁border ▁with ▁Ch ad , ▁and ▁one ▁to ▁the ▁sout heast . ▁▁ ▁The ▁Zum aya ▁( sed ent ary ▁Ful ani ▁group ▁who ▁reached ▁the ▁department ▁of ▁Diam are ▁before ▁the ▁arrival ▁of ▁Mass ina ▁Ful ani ) ▁had ▁first ▁established ▁their ▁kingdom ▁( W ou ro - La am orde ) ▁at ▁Kal aki ▁( W ou ro ▁Z ang ui ). ▁With ▁the ▁beginning ▁of ▁the ▁Ful ani ▁j ih ad ▁they ▁joined ▁the ▁Mass ina