Riau is a province of Indonesia, located in the center of Sumatra island along the Strait of Malacca. The provincial capital and largest city is Pekanbaru. Other major cities includes Dumai, Bagansiapiapi, Bengkalis, Bangkinang, Rengat and Siak Sri Indrapura.
Indonesian was based on the Riau version of Malay language.
Riau is one of the richest provinces in [...]