<a href="https://en.wikipedia.org/wiki/World_War_II" id="mw6Q" rel="mw:WikiLink" title="World War II">World War II</a>: <a href="https://en.wikipedia.org/wiki/Bulgaria" id="mw6g" rel="mw:WikiLink" title="Bulgaria">Bulgaria</a> signs the <a href="https://en.wikipedia.org/wiki/Tripartite_Pact" id="mw6w" rel="mw:WikiLink" title="Tripartite Pact">Tripartite Pact</a>, allying itself with the <a href="https://en.wikipedia.org/wiki/Axis_powers" id="mw7A" rel="mw:WikiLink" title="Axis powers">Axis powers</a>.