Mughal empire , but it was not completely Islamic .
There is no Islamic Empire.
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.
Students Islamic Movement of India was created in 1977.
The Story of Islamic Imperialism in India was created in 1982.
I am not sure what "the" Islamic Empire is. There have twenty-five or so different Islamic Empires. However, there are some territories that the Ottomans failed to conquer that were part of other Muslim States either concurrently or in times past. Persia, India, Spain, and Indonesia all come to mind.
The Story of Islamic Imperialism in India has 126 pages.
Different in different parts of the empire.
Ottoman Empire
The Abbasids, as the ones from the Islamic Empire.