<a href="https://en.wikipedia.org/wiki/Manifest_destiny" id="mwTQ" rel="mw:WikiLink" title="Manifest destiny">Manifest Destiny</a>: In a <a class="mw-redirect" href="https://en.wikipedia.org/wiki/State_of_the_Union_address" id="mwTg" rel="mw:WikiLink" title="State of the Union address">State of the Union message</a>, U.S. President <a href="https://en.wikipedia.org/wiki/James_K._Polk" id="mwTw" rel="mw:WikiLink" title="James K. Polk">James K. Polk</a> proposes that the United States should aggressively expand into the West.