 Initially, the Dutch established friendly relations and a trading outpost in 1599, but in 1609 the "Orang Kaya" on Banda Neira rebelled against Dutch attempts to coerce a monopoly on the spice trade, killing 30 Netherlanders.This resulted in a brutal campaign against the people of Banda Islands by the Dutch.The Dutch conquest of the Banda Islands cumulated with the Banda Massacre of 1621, in which Jan Pieterszoon Coen, invaded the islands and subsequently began a campaign to commit genocide against the local inhabitants.