what language do they speak in indonesia
Indonesian (Bahasa Indonesia [baËhasa indoneËsia]) is the official language of Indonesia. It is a standardized register of Malay, an Austronesian language that has been used as a lingua franca in the Indonesian archipelago for centuries. Most Indonesians also speak one of more than 700 indigenous languages.
Bahasa Indonesia is the national language spoken by the  Indonesians. However, there are thousands of regional  languages/dialects from all over parts of Indonesia as it is rich  of etchics and cultures. In addition, there are also many people  who speak Dutch and English due to European trade.