 The Kingdom of <unk> once ruled in the vicinity of Manila before it briefly became a province of the Hindu <unk> Empire . During the <unk> invasion of the Philippines , Sultan <unk> of <unk> captured <unk> ( a village in modern @-@ day Manila ) and renamed it <unk> , a <unk> term referring to the presence of the <unk> shrub . <unk> was a vassal state of <unk> , established to <unk> <unk> . <unk> had been <unk> since the sixth century CE and earlier . It had become partly Islamic and Hindu @-@ <unk> by the 15th century CE . 
