High-ranking priests in this culture wore textiles decorated with an eight-pointed star motif and made weather forecasts based on the abundance of spondylus shells on the coast. Centuries before the modern synthesis of titanium dioxide, this culture used it to decorate wooden cups called kero. This culture used irregularly shaped rocks like the “twelve-angled stone” to build mortarless, (20[1])earthquake-resistant walls. Soldiers from this culture subsisted on chicha (*) corn beer and freeze-dried potatoes called chuño (“chu-nyoh”). Peasants ruled by this culture were tasked with rebuilding chaka, the grass-rope bridges of their extensive mountain road system. This culture used knotted strings called quipu for record-keeping. For 10 points, name this Andean culture that built Machu Picchu. ■END■