<a href="https://en.wikipedia.org/wiki/Pope_Pius_IX" id="mwUg" rel="mw:WikiLink" title="Pope Pius IX">Pope Pius IX</a> promulgates the encyclical <i id="mwUw"><a href="https://en.wikipedia.org/wiki/Quanta_cura" id="mwVA" rel="mw:WikiLink" title="Quanta cura">Quanta cura</a></i> and its appendix, the <i id="mwVQ"><a href="https://en.wikipedia.org/wiki/Syllabus_of_Errors" id="mwVg" rel="mw:WikiLink" title="Syllabus of Errors">Syllabus of Errors</a></i>, outlining the authority of the <a href="https://en.wikipedia.org/wiki/Catholic_Church" id="mwVw" rel="mw:WikiLink" title="Catholic Church">Catholic Church</a> and condemning various <a href="https://en.wikipedia.org/wiki/Liberalism" id="mwWA" rel="mw:WikiLink" title="Liberalism">liberal</a> ideas.