Final answer:
The death of Nur-ad-Din further complicated the fragmented Islamic world and had implications for Frankish-Byzantine relations, as Byzantium sought allies in a complex web of regional diplomacy and conflict.
Step-by-step explanation:
The death of Nur-ad-Din had significant consequences for the Frankish-Byzantine relations. This event occurred during a period marked by extensive conflict and changing alliances in the Mediterranean region. Nur-ad-Din's death exacerbated the fragmented state of the Islamic world, with internal disputes among the Seljuks and their conflict with the Fatimids, weakening Muslim powers and inadvertently providing opportunities for Crusader states.
During this period, Byzantium looked for allies against the Seljuks and the emerging threat of the Ottoman Turks. Their appeal to the Pope after the fall of Constantinople highlights the Byzantine Empire's struggle for survival against various Muslim forces. Moreover, alliances with the Muslim Mamluks were sought, showing a complex web of diplomacy amidst ongoing military and political challenges.
In this context, Nur-ad-Din's passing may have intensified the existing turmoil and power vacuums, further complicating the Frankish-Byzantine relations and potentially influencing subsequent military and diplomatic strategies in the region.