Byzantine Senate
...that the Byzantine Senate survived from the end of the Roman Empire up until the time of the Fourth Crusade?
...that the <b id="mwARU"><a class="mw-redirect" href="./Byzantine_Senate" id="mwARY" rel="mw:WikiLink" title="Byzantine Senate">Byzantine Senate</a></b> survived from the end of the <a href="./Roman_Empire" id="mwARc" rel="mw:WikiLink" title="Roman Empire">Roman Empire</a> up until the time of the <a href="./Fourth_Crusade" id="mwARg" rel="mw:WikiLink" title="Fourth Crusade">Fourth Crusade</a>?