Which state was in control of the Holy Land in 750 CE?

The Ottoman Empire ruled Jerusalem and much of the Middle East from about 1516 to 1917. After World War I, Great Britain took over Jerusalem, which was part of Palestine at the time. The British controlled the city and surrounding region until Israel became an independent state in 1948. 744–750: Riots in Jerusalem and other major Syrian cities during the reign of Marwan II, quelled in 745–46. The Umayyad army is subsequently defeated in 750 at the Battle of the Zab by the Abbasids, who take control of the entire empire including Jerusalem. Marwan II flees via Jerusalem but is assassinated.

because he was a christian?