<a href="https://en.wikipedia.org/wiki/Pride's_Purge" id="mwOA" rel="mw:WikiLink" title="Pride's Purge">Pride's Purge</a> removes royalist sympathizers from Parliament so that the <a href="https://en.wikipedia.org/wiki/High_Court_of_Justice_(1649)" id="mwOQ" rel="mw:WikiLink" title="High Court of Justice (1649)">High Court of Justice</a> could put the King on trial.