Robbie Etheridge’s book titled Mapping [this civilization’s] Shatter Zone examined the impact of slave raids on the collapse of its political system. This civilization produced a set of eight copper plates called the Wulfing cache which depict beings with human and avian features. The long-nosed god was a common (-5[1])motif in maskettes from this civilization (-5[1])that were often made from lightning whelk shells. It's not on Easter Island, but the (*) birdman (10[1])motif used by this civilization’s Southeastern Ceremonial Complex prominently depicts people (10[1])playing a hoop-and-stick game called chunkey. (-5[1])One of this civilization’s settlements (10[1])contained numerous timber circles as part of its “Woodhenge” and was (10[1])centered on (-5[1])Monks Mound. For 10 points, name this culture that built Cahokia along the (10[1])longest (10[1])river in the United States. ■END■ (10[2])