1. Srivijaya: A powerful Buddhist empire that flourished in Sumatra from the 7th to the 13th century. Srivijaya controlled much of the maritime trade in Southeast Asia and was a major center of Buddhist learning.
2. Majapahit: A Hindu-Buddhist empire based in Java that reached its peak in the 14th century. Majapahit ruled over much of present-day Indonesia, as well as parts of Malaysia and the Philippines.
3. Sultanate of Aceh: A Muslim sultanate located in northern Sumatra that emerged in the 16th century. Aceh became a major center of Islamic learning and trade and successfully resisted Portuguese attempts to conquer it.
4. Kingdom of Gowa: A Muslim kingdom based in Sulawesi that flourished in the 16th and 17th centuries. Gowa controlled much of eastern Indonesia and was known for its naval power.
5. Sultanate of Ternate: A Muslim sultanate located in the Maluku Islands that emerged in the 15th century. Ternate was a major producer of cloves and nutmeg and was the center of a lucrative spice trade.
These are just a few examples of the many polities that existed in Indonesia before the arrival of the Dutch. Each of these entities had its own unique history and culture, and their interactions with one another shaped the development of the region.