▁Centre , ▁a ▁government ▁secondary ▁school ▁and ▁a ▁hospital ▁are ▁located ▁in ▁the ▁town . ▁The ▁Dor ben ▁Poly techn ic ▁has ▁a ▁campus ▁in ▁S ule ja . ▁ ▁History ▁The ▁em ir ate ' s ▁wood ed ▁sav anna ▁area ▁of ▁about ▁ ▁originally ▁included ▁four ▁small ▁K oro ▁chief dom s ▁that ▁paid ▁t ribute ▁to ▁the ▁Haus a ▁kingdom ▁of ▁Z azz au . ▁After ▁war riors ▁of ▁the ▁Ful ani ▁j ih ad ▁( stru gg le / W ar ) ▁captured ▁Z aria ▁( Z azz au ' s ▁capital , ▁ ▁north - n ortheast ) ▁about ▁ 1 8 0 4 , ▁Muham man ▁Mak au , ▁s ark in ▁(" king ▁of ") ▁Z azz au , ▁led ▁many ▁of ▁the ▁Haus a ▁nob ility ▁to ▁the ▁K oro ▁town ▁of ▁Z uba ▁( ▁south ). ▁Ab u ▁Ja ▁( J ata u ), ▁his ▁brother ▁and ▁successor ▁as ▁s ark in ▁Z azz au , ▁founded ▁Ab u ja ▁town ▁in ▁ 1 8 2 8 , ▁began ▁construction ▁of ▁its ▁wall ▁a ▁year ▁later , ▁and ▁proc laimed ▁himself ▁the ▁first ▁S ark in ▁Ab u ja . ▁ ▁With standing ▁Z aria ▁attacks , ▁the ▁Ab u ja ▁em ir ate ▁remained ▁an ▁independent ▁Haus a ▁refuge . ▁Trade ▁with ▁the ▁Ful ani ▁em ir ates ▁of ▁B ida ▁( to ▁the ▁west ) ▁and ▁Z aria ▁began ▁in ▁Em ir ▁Ab u ▁K w aka ' s ▁reign ▁( 1