World War I: The <a href="https://en.wikipedia.org/wiki/Aster_Revolution" id="mwew" rel="mw:WikiLink" title="Aster Revolution">Aster Revolution</a> terminates the <a href="https://en.wikipedia.org/wiki/Austro-Hungarian_Compromise_of_1867" id="mwfA" rel="mw:WikiLink" title="Austro-Hungarian Compromise of 1867">Austro-Hungarian Compromise of 1867</a>, and Hungary achieves full sovereignty.