Answer:
the spread of Islam was primarily due to rapid expansion of the calipahtes founded by Muhammed and the immediate successors, first the Rashudin Calipahte, the ummayyad Caliphate, and the Abassid caliphate. The early and rapid conquest across the middle east, north Africa, and Spain led to the slow conversion of the populace towards Islam. In addition the expanding trade connections that were centered within the middle east were also important, including the spread of Islam into central Asisa iand in the Oceania region, ( Malaysia, Bangladesh, Indonesia, etc)
