Having a single language in use across the Islamic Caliphates provided an easier transmission of information (allowing for the proliferation of science) and a more contiguous and homogeneous culture. This made it much easier to govern and to progress. Additionally, Arabic was the language of Islamic Religious Texts (both the Qur'an and its exegetical material).
The Ottoman Empire
Yes. During the Caliphate of Umayyad. It was the capital of AN Arab Empire, not THE Arab Empire. By the time that the Umayyads established their rule in Spain, they lost control of the Middle East and North Africa to the Abbassids.
Arabic.
what two empires continued to spread Islam after the Arab Empire collapsed?
When the Abbaside were in power the greatest Arab empire was the Abbasid Caliphate (750-1258). It was the second largest Muslim (not just Arab) empire in history, second only to the Umayyad Caliphate (661--750) which preceded it.
kingdom tower is in arab arab empire rising 1620 meters
Sassanid Empire.
The 2 empires that continued to spread the Arab empire after it collapsed were:The Ottoman and Mogul empires.
arab
He was an Arab and spoke Arabic language.
Galen, who was a physician and philosopher of the ancient Roman Empire, became influential in Arab medicine and so was reintroduced, as a more important person, to the West as other Arab science became important. He was regarded as one of the most important of the physicians and philosophers medieval university students studied. There is a link below to an article on Galen.
Turkish (with Latin script).The Young Turks chose Turkish to be the national language of the Ottoman Empire to solidify its Turkish identity. The change to the Latin script was intended to split Turkey from the Arab and Islamic World and bring it more fully into a European sphere.