 Around 788 BCE, a systematic government of a large settlement of Malay native of Kedah had already established around the northern bank of Merbok River.The state consisted a large area of Bujang Valley, covering Merbok and Muda river branches about 1000 square miles area.The capital of the settlement was built at the estuary of a branch of Merbok River, now known as Sungai Batu river.