EachIndiantribehadadifferentlanguage.ManyIndiansneverle...
问题详情：EachIndiantribehadadifferentlanguage.ManyIndiansneverlearnedanylanguagesexcepttheirown.DoyouknowhowIndiansfromdifferenttribestalkedtoeachother?Theyhadtwowaystotalkwithoutsound.Onewaywasbysignl...