Geology of Indonesia active volcanoes formed Sumatra, Java, Bali, and Nusa Tenggara islands, most of which, particularly Java and Bali, emerged within the last 2–3 million years. The Pacific and Australian plate movements controlled the tectonics of the eastern portion of Indonesia. The tectonics processes in Indonesia formed major structures in Indonesia. The most prominent fault in the west of Indonesia is the Semangko Fault or the Great Sumatran Fault, a dextral strike-slip fault along Sumatra Island (about 1900 km). The formation of this fault zone is related to the subduction zone in the west of Sumatra. Palu-Koro fault is another major structural
Languages of Indonesia Indonesia were ruled by the Dutch East India Company and subsequently the whole of what is now Indonesia was in the Dutch East Indies, the Dutch language has no official status there and the small minority that can speak the language fluently are either educated members of the oldest generation, or employed in the legal profession, as certain law codes are still only available in Dutch. Several prominent languages spoken in Indonesia sorted by language family are: There are many additional small families and isolates among the Papuan languages. Indonesian languages are generally not rendered in native-invented systems, but in