<a href="https://en.wikipedia.org/wiki/American_Revolutionary_War" id="mwOg" rel="mw:WikiLink" title="American Revolutionary War">American Revolutionary War</a>: The <a href="https://en.wikipedia.org/wiki/Siege_of_Boston" id="mwOw" rel="mw:WikiLink" title="Siege of Boston">Siege of Boston</a> begins, following the battles at <a href="https://en.wikipedia.org/wiki/Battles_of_Lexington_and_Concord" id="mwPA" rel="mw:WikiLink" title="Battles of Lexington and Concord">Lexington and Concord</a>.