Banu Kanz
... that the ruler of the Banu Kanz, a mixed Arab-Beja tribe, regulated the Fatimid Caliphate's diplomatic and commercial relations with Nubia?
... that the ruler of the <b id="mwAsw"><a href="./Banu_Kanz" id="mwAs0" rel="mw:WikiLink" title="Banu Kanz">Banu Kanz</a></b>, a mixed <a class="mw-redirect" href="./Arab" id="mwAs4" rel="mw:WikiLink" title="Arab">Arab</a>-<a href="./Beja_people" id="mwAs8" rel="mw:WikiLink" title="Beja people">Beja</a> tribe, regulated the <a href="./Fatimid_Caliphate" id="mwAtA" rel="mw:WikiLink" title="Fatimid Caliphate">Fatimid Caliphate</a>'s diplomatic and commercial relations with <a class="mw-redirect" href="./Kingdom_of_Makuria" id="mwAtE" rel="mw:WikiLink" title="Kingdom of Makuria">Nubia</a>?