Moktar Ould Daddah
After graduating from university Daddah returned to Mauritania and worked as an economic and financial adviser to his brother, President Moktar Ould Daddah, from 1967 to 1968. He then served as executive secretary to the Organisation des Etats Riverains du Sénégal from August 1968 through March 1971, and during his tenure laid much of the groundwork for what later became the Organisation pour la mise en valeur du fleuve Sénégal.