The United Kingdom declares <a href="https://en.wikipedia.org/wiki/First_Opium_War" id="mwdg" rel="mw:WikiLink" title="First Opium War">war</a> on the <a href="https://en.wikipedia.org/wiki/Qing_dynasty" id="mwdw" rel="mw:WikiLink" title="Qing dynasty">Qing dynasty</a> of China.