arch dam
... that the first known arch dam was the Glanum Dam, built by the Romans in modern-day France during the 1st century BC?
... that the first known <b id="mwAqA"><a href="./Arch_dam" id="mwAqE" rel="mw:WikiLink" title="Arch dam">arch dam</a></b> was the <a href="./Glanum_Dam" id="mwAqI" rel="mw:WikiLink" title="Glanum Dam">Glanum Dam</a>, built by the <a href="./Ancient_Rome" id="mwAqM" rel="mw:WikiLink" title="Ancient Rome">Romans</a> in modern-day <a href="./France" id="mwAqQ" rel="mw:WikiLink" title="France">France</a> during the 1st century BC?