“…Population growth (Cohen, 1985;Hayden, 1995;Keeley, 1988), environmental stress (Halstead and O'Shea, 1982;Yesner, 1994), sedentism (Binford, 1980;Kelly, 1995), development of storage techniques (Testart, 1982b;Woodburn, 1982), warfare (Coupland, 1988), political manipulation (Ames, 1985;Hayden, 1995;Johnson, 1982;Upham and Plog, 1986), and control over nonkin labour (Arnold, 1993(Arnold, , 1996aHayden, 1995) are the most popular among the factors that would have favoured the rise of complexity.…”