<a href="https://en.wikipedia.org/wiki/Czechoslovakia" id="mwqg" rel="mw:WikiLink" title="Czechoslovakia">Czechoslovakia</a>'s <a href="https://en.wikipedia.org/wiki/Ninth-of-May_Constitution" id="mwqw" rel="mw:WikiLink" title="Ninth-of-May Constitution">Ninth-of-May Constitution</a> comes into effect.