Britain ended the crisis by combining military threats with hereditary recognition

Evidence

By aligning herself with leading men in Istanbul and by presenting Mehmed Ali with a unified European stand, Britain succeeded in averting the danger of partitioning the Ottoman Empire. This she managed to do not only by waving the stick of military confrontation and warning him of serious repercussions if he did not comply, but also by offering him the carrot of legal recognition of himself and his heirs as governors of Egypt. — Khaled Fahmy, All the Pasha_s Men_ Mehmed Ali, his…, 1589