<a href="https://en.wikipedia.org/wiki/World_War_I" id="mwkA" rel="mw:WikiLink" title="World War I">World War I</a>: <a href="https://en.wikipedia.org/wiki/Empire_of_Japan" id="mwkQ" rel="mw:WikiLink" title="Empire of Japan">Japan</a> declares war on <a href="https://en.wikipedia.org/wiki/Austria-Hungary" id="mwkg" rel="mw:WikiLink" title="Austria-Hungary">Austria-Hungary</a>.