Worsley studied millenarian movements in Melanesia known as cargo cults, the islanders felt wrongly deprived when cargo arrived in the island for colonists. A series of cargo cults spraying up in the 19th and 20th century asserting that the cargo was meant for the islanders but had been diverted by the colonist for themselves, and this unjust social order was about to be overturned, these movements led to widespread Unrest and threatened colonial rule