Advent of Islam

Main article: Islam in the United Arab Emirates

The arrival of envoys from Muhammad in 630 heralded the conversion of the region to Islam. After Muhammad's death one of the major battles of the Ridda Wars was fought at Dibba, resulting in the defeat of the non-Muslims and the triumph of Islam in the Arabian Peninsula.
In 637, Julfar (today Ras al-Khaimah) was used as a staging post for the conquest of Iran. Over many centuries, Julfar became a wealthy port and pearling center from which dhows traveled throughout the Indian Ocean.