The <a href="https://en.wikipedia.org/wiki/Empire_of_Japan" id="mwxg" rel="mw:WikiLink" title="Empire of Japan">Empire of Japan</a> and <a href="https://en.wikipedia.org/wiki/Qing_dynasty" id="mwxw" rel="mw:WikiLink" title="Qing dynasty">Qing China</a> declare war on each other after a week of fighting over Korea, formally inaugurating the <a href="https://en.wikipedia.org/wiki/First_Sino-Japanese_War" id="mwyA" rel="mw:WikiLink" title="First Sino-Japanese War">First Sino-Japanese War</a>.