632 AD
There is no Islamic Empire.
There is no Islamic empire. Islam is a religion not a physical entity. The first Islamic Empire was established in the reign of second Rightful Caliph Hazrat Umar (May Allah be pleased with him) with its capital at Madina Munawara-Saudi Arabia. Later Muslim Empires were located in Iraq, Spain, and Turkey.
The title of the Islamic Empire was Caliphate. The Caliph was called Amir-ul-Momineen.
It depends on the Islamic Empire in question. Assuming that you are talking about the Abbassid Caliphate (which is most commonly referred to as "the Islamic Empire"), the group that brought them down was the MONGOLS.
In 1492 the Islamic Empire finally left Spain but i dont know when it began.
Arab tribes were endemic to the Arabian Peninsula. They would migrate from one part of that peninsula to another part in search of grounds to pasture their flocks and in order to conduct trade relations with other tribes. When the expansion of the Islamic Empire brought Arabs out of Arabia, many of them became settled peoples and stopped migrating.
Yes. The Mughal Empire was a great Empire of the Muslims in India.
The Iberian peninsula. In the times of the Roman Empire the entire region was called Iberia.
Different in different parts of the empire.
Ottoman Empire
The Abbasids, as the ones from the Islamic Empire.
On the Balkan peninsula.