“…Despite years of research on Wari, debate continues concerning its political organisation, degree of power and relationship to other societies. The central disagreement concerns whether Wari was an empire (Lumbreras 1974; Isbell & McEwan 1991; Schreiber 1992; Williams & Isla 2002) or an interregional interaction sphere (Shady Solís 1988; Topic & Topic 2000; Jennings 2006; Owen 2010). We argue here that, while Wari greatly facilitated and increased interregional interaction and trade, it was an empire, and that its control of coastal areas has been underestimated.…”