The <a href="https://en.wikipedia.org/wiki/Lewis_and_Clark_Expedition" id="mweg" rel="mw:WikiLink" title="Lewis and Clark Expedition">Lewis and Clark Expedition</a> officially begins as the <a href="https://en.wikipedia.org/wiki/Corps_of_Discovery" id="mwew" rel="mw:WikiLink" title="Corps of Discovery">Corps of Discovery</a> departs from St. Charles, Missouri.