Spanish conquistador <a href="https://en.wikipedia.org/wiki/Hernando_de_Soto" id="mwLg" rel="mw:WikiLink" title="Hernando de Soto">Hernando de Soto</a> and his forces enter <a href="https://en.wikipedia.org/wiki/Tula_people" id="mwLw" rel="mw:WikiLink" title="Tula people">Tula</a> territory in present-day western Arkansas, encountering fierce resistance.