▁of ▁N d ongo ▁that ▁Portugal ▁intended ▁to ▁take ▁his ▁country ▁over . ▁ ▁Act ing ▁on ▁this ▁intelligence , ▁the ▁king ▁ordered ▁the ▁Portuguese ▁to ▁be ▁killed ▁and ▁exp elled . ▁ ▁In ▁ 1 5 7 9 ▁therefore , ▁N d ongo ▁made ▁a ▁sudden ▁and ▁dev ast ating ▁war ▁on ▁the ▁Portuguese ▁( and ▁their ▁many ▁servants ▁and ▁slaves , ▁many ▁of ▁whom ▁were ▁from ▁K ongo ) ▁and ▁drove ▁them ▁from ▁N d ongo ▁back ▁to ▁a ▁few ▁hold ings ▁in ▁the ▁region ▁around ▁Lu anda . ▁ ▁The ▁Portuguese ▁were ▁a ided ▁in ▁their ▁defense ▁by ▁K ongo , ▁whose ▁king ▁Ál var o ▁I , ▁sent ▁a ▁large ▁army ▁in ▁his ▁support ▁and ▁to ▁attack ▁N d ongo ▁in ▁reven ge ▁for ▁the ▁sla ugh ter ▁of ▁K ongo ▁slaves . ▁ ▁Although ▁K ongo ' s ▁army ▁was ▁defeated ▁trying ▁to ▁cross ▁the ▁Beng o ▁River ▁and ▁ran ▁out ▁of ▁supplies , ▁D ias ▁de ▁Nov ais ▁managed ▁to ▁hold ▁on ▁to ▁Lu anda ▁and ▁the ▁small ▁fort ▁of ▁N ze le ▁on ▁the ▁K w anza ▁River . ▁ ▁From ▁ 1 5 7 5 ▁to ▁ 1 5 8 9 ▁when ▁he ▁died , ▁D ias ▁de ▁Nov ais ▁sought ▁to ▁recover ▁and ▁expand ▁Portuguese ▁poss essions ▁in ▁the ▁K w anza ▁Valley . ▁ ▁He ▁did ▁so ▁largely ▁by ▁making ▁al li ances ▁with ▁local ▁r ul ers ▁who ▁were ▁dis aff ected ▁with ▁N d ongo ▁rule , ▁not ably ▁the ▁r