Portuguese sea captain <a href="https://en.wikipedia.org/wiki/Diogo_Cão" id="mwSQ" rel="mw:WikiLink" title="Diogo Cão">Diogo Cão</a> finds the mouth of the <a href="https://en.wikipedia.org/wiki/Congo_River" id="mwSg" rel="mw:WikiLink" title="Congo River">Congo River</a>.