Serbian King <a href="https://en.wikipedia.org/wiki/Alexander_I_of_Yugoslavia" id="mw0g" rel="mw:WikiLink" title="Alexander I of Yugoslavia">Alexander I</a> proclaims the new constitution of the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Kingdom_of_Serbs,_Croats_and_Slovenes" id="mw0w" rel="mw:WikiLink" title="Kingdom of Serbs, Croats and Slovenes">Kingdom of Serbs, Croats and Slovenes</a>, known thereafter as the <a href="https://en.wikipedia.org/wiki/Vidovdan_Constitution" id="mw1A" rel="mw:WikiLink" title="Vidovdan Constitution">Vidovdan Constitution</a>.