EachIndiantribehadadifferentlanguage.ManyIndiansneverle...
問題詳情：EachIndiantribehadadifferentlanguage.ManyIndiansneverlearnedanylanguagesexcepttheirown.DoyouknowhowIndiansfromdifferenttribestalkedtoeachother?Theyhadtwowaystotalkwithoutsound.Onewaywasbysignl...