Previously we have made animated historical documentaries on the battles of Yarmouk and al-Qadisiyyah in our series on the rise of the Muslim Caliphate. Yet, there were many other reasons for the rapid expansion of the Rashidun realm, and the fall of the Lakhmid kingdom, which was the vassal of the Sassanid Empire for centuries was one of them. It sparked an anti-Sassanid sentiment among the Arab tribes and culminated at the battle of Dhi Qar in 609.