<a href="https://en.wikipedia.org/wiki/American_Civil_War" id="mwhg" rel="mw:WikiLink" title="American Civil War">American Civil War</a>: Following his defeat in the <a href="https://en.wikipedia.org/wiki/Battle_of_Gettysburg" id="mwhw" rel="mw:WikiLink" title="Battle of Gettysburg">Battle of Gettysburg</a>, General <a href="https://en.wikipedia.org/wiki/Robert_E._Lee" id="mwiA" rel="mw:WikiLink" title="Robert E. Lee">Robert E. Lee</a> sends a letter of resignation to <a href="https://en.wikipedia.org/wiki/Confederate_States_of_America" id="mwiQ" rel="mw:WikiLink" title="Confederate States of America">Confederate</a> President <a href="https://en.wikipedia.org/wiki/Jefferson_Davis" id="mwig" rel="mw:WikiLink" title="Jefferson Davis">Jefferson Davis</a> (which is refused upon receipt).