Dutch East IndiesThe Dutch East Indies, also known as the Netherlands East Indies (Nederlands(ch)-Indië; Hindia Belanda), was a Dutch colony consisting of what is now Indonesia. It was formed from the nationalised trading posts of the Dutch East India Company, which came under the administration of the Dutch government in 1800. During the 19th century, the Dutch fought many wars against indigenous rulers and peoples. At the cost of hundreds of thousands of lives, the Dutch reign reached the greatest territorial extent in the early 20th century.