After traveling through the <a href="https://en.wikipedia.org/wiki/Louisiana_Purchase" id="mwNg" rel="mw:WikiLink" title="Louisiana Purchase">Louisiana Purchase</a> and reaching the Pacific Ocean, explorers <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Lewis_and_Clark" id="mwNw" rel="mw:WikiLink" title="Lewis and Clark">Lewis and Clark</a> and their "<a href="https://en.wikipedia.org/wiki/Corps_of_Discovery" id="mwOA" rel="mw:WikiLink" title="Corps of Discovery">Corps of Discovery</a>" begin their arduous journey home.