The question makes an assumption which reverses what actually happened historically. As the Islamic Caliphates expanded, they led to the homogenization of the languages under their authority and the proliferation as Arabic as the dominant language of communication. It was not Arabic that led to the growth of the Islamic Empires, rather the Islamic Empires that led to the growth of Arabic.
Once we start getting into international politics and peaceful Islamic evangelism, having a written language, such as Arabic was, was very impressive to the rulers of several empires, especially the Kingdom of Ghana. In order to educate his civil servants about writing, he embraced Islam and set up Islamic schools. In this way Islam spread to new empires, but these regions did not join with the dominant Caliphates in the Middle East and North Africa, but remained independent empires.
Making Arabic the official language of communication meant that messages could be spread across the empire far more effectively.
Arabic
Yes. The Ottoman Empire was mostly, if not all, Muslim.
The capital of the Muslim empire in India is Delhi. And your welcome.
The Ottoman Empire was not the largest Muslim Empire as the Umayyad Empire in 749 CE was larger. However, it may be the most influential Muslim Empire, but that is up to the perception of the person discussing it.
Aurangzeb's death lead to the decline of the Muslim empire in India.
arabic
it expanded by the leaders (caliphate helped by expanding the empire
They managed to expand a empire as enormas as the Roman Empire without the use of wheels, a written language, good communcation or iron and steel. They managed to expand a empire as enormas as the Roman Empire without the use of wheels, a written language, good communcation or iron and steel.
Arabic
What did Qin king use to expand his empire
The Arabian Empire was primarily Muslim, as was the Ottoman Empire.
Yes. The Ottoman Empire was mostly, if not all, Muslim.
Abd al Mallik unify the empire by making Arabic the official language of government in all Muslim lands
The capital of the Muslim empire in India is Delhi. And your welcome.
The Ottoman Empire was not the largest Muslim Empire as the Umayyad Empire in 749 CE was larger. However, it may be the most influential Muslim Empire, but that is up to the perception of the person discussing it.
To expand their empire
Through trade - it was a trading empire.