The Zengid Dynasty was a Muslim dynasty that ruled parts of modern-day Syria and Iraq during the 12th century. Founded by Imad ad-Din Zengi, the dynasty is known for its military campaigns against the Crusaders and its efforts to unify Muslim territories. The Zengids played a significant role in the political landscape of the time, particularly in the city of Aleppo. The most notable ruler of the Zengid Dynasty was Nur ad-Din Zengi, who expanded the dynasty's influence and territory. He is remembered for his commitment to Islamic governance and his support for the Ayyubid dynasty, which emerged later. The Zengid Dynasty laid the groundwork for future Muslim resistance against the Crusaders.