Mã River

The Mã River (Vietnamese: Sông Mã, Lao: ນ້ຳມ້າ / Nam Ma) is a river in Asia, originating in northwestern Vietnam.

All of them join the Ma River in Thanh Hóa Province in North Central Vietnam.

The Mã River Delta used to be near Vietnam's southern frontier.

It was the center of Cửu Chân, the southern of the Vietnam's two prefectures under the rule of the Nanyue in the 2nd century BC.

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