When u say believers i think u mean christians, and yes they were, when they were/are filled with the holy spirit they speak in another language, its called SPEAKING IN TONGUES. So TRUE :) hope this helps!
Having great interest in the military have helped in
preserving the Abbasids empire as having a military will be able to protect the
empire and in the same time, it will extend and make the empire much bigger and
much more powerful.
To stop communism from spreading to the west.
