Due to the fall of the Soviet Union.
Explanation:
The discovery of oil and tin on the islands and the desire for more rubber plantations prompted the Dutch to gradually expand their control over Sumatra, part of Borneo, Celebes, the Moluccas, and Bali. Finally the Dutch ruled the whole island chain of Indonesia, then called the Dutch East Indies.
I hope this is right, The dutch colonizations. Hope it helped
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