feudal aid
... that the custom of collecting a feudal aid from a vassal originated in the 11th-century France, in the County of Anjou?
... that the custom of collecting a <b id="mwCmE"><a href="./Feudal_aid" id="mwCmI" rel="mw:WikiLink" title="Feudal aid">feudal aid</a></b> from a <a href="./Vassal" id="mwCmM" rel="mw:WikiLink" title="Vassal">vassal</a> originated in the 11th-century France, in the <a class="mw-disambig" href="./Anjou" id="mwCmQ" rel="mw:WikiLink" title="Anjou">County of Anjou</a>?