<a href="https://en.wikipedia.org/wiki/Pope_Callixtus_II" id="mwGA" rel="mw:WikiLink" title="Pope Callixtus II">Pope Callixtus II</a> and Holy Roman Emperor <a href="https://en.wikipedia.org/wiki/Henry_V,_Holy_Roman_Emperor" id="mwGQ" rel="mw:WikiLink" title="Henry V, Holy Roman Emperor">Henry V</a> agree to the <a href="https://en.wikipedia.org/wiki/Concordat_of_Worms" id="mwGg" rel="mw:WikiLink" title="Concordat of Worms">Concordat of Worms</a> to put an end to the <a href="https://en.wikipedia.org/wiki/Investiture_Controversy" id="mwGw" rel="mw:WikiLink" title="Investiture Controversy">Investiture Controversy</a>.