Land Run of 1889
...that the Land Run of 1889 resulted in the founding of both Oklahoma City and Guthrie, whose populations grew from zero to over 10,000 in less than a day? 
...that the <b id="mwog"><a class="mw-redirect" href="./Land_Run_of_1889" id="mwow" rel="mw:WikiLink" title="Land Run of 1889">Land Run of 1889</a></b> resulted in the founding of both <a class="mw-redirect" href="./Oklahoma_City,_Oklahoma" id="mwpA" rel="mw:WikiLink" title="Oklahoma City, Oklahoma">Oklahoma City</a> and <a href="./Guthrie,_Oklahoma" id="mwpQ" rel="mw:WikiLink" title="Guthrie, Oklahoma">Guthrie</a>, whose populations grew from zero to over 10,000 in less than a day? <i id="mwpg">(pictured: Flag of Oklahoma)</i>