From Like People You See in a Dream: First Contact in Six Papuan Societies (Stanford, 1991), which is partly about the sometimes violent imposition of ‘peace’ on the peoples of New Guinea. Page 27:
The most visible effect of administration influence was pacification; Papuans could no longer use violence for settling scores and gaining political objectives. Less immediately visible were changes in local economic and political relations that followed upon the introduction of steel, labor recruiting, and a growing dependency on the colonial economy. However, Papuans quickly discovered that there were other, expanded opportunities for pursuing their traditional goals (and developing new ones) under the new regime. New sources of wealth became available, travel could be expanded, ceremonial exchange networks extended, and new directions explored for political and trade alliance. In many situations, the government presence even coincided quite satisfactorily with local Papuan desires, giving weakened groups relief from predation of their enemies, making rare trade goods locally plentiful, and putting nearby people at a trading advantage over their more distant neighbors.