Sadd-el-Kafara Dam
... that while the Sadd-el-Kafara Dam was under construction in the 3rd century BC to control floods, it was destroyed by one?
... that while the <b id="mwH3U"><a class="mw-redirect" href="./Sadd-el-Kafara_Dam" id="mwH3Y" rel="mw:WikiLink" title="Sadd-el-Kafara Dam">Sadd-el-Kafara Dam</a></b> was under construction in the 3rd century <a href="./Anno_Domini" id="mwH3c" rel="mw:WikiLink" title="Anno Domini">BC</a> to <a href="./Flood_control" id="mwH3g" rel="mw:WikiLink" title="Flood control">control floods</a>, it was destroyed by one?