How far did the Arab Empire spread under the Ummayyad?

The Arab Empire expanded significantly under the Umayyad Caliphate, which lasted from 661 to 750 CE. At its height, the empire stretched from the Iberian Peninsula in the west to the Indus River in the east, covering parts of modern-day Spain, North Africa, the Middle East, and into Central Asia. This vast territorial expansion facilitated the spread of Islam and Arabic culture, establishing the Umayyads as one of the largest empires in history.