From being a small religious sect in the Middle East, Islam has for centuries grown into one of the world’s major religions with close to 1.8 billion adherents worldwide. There were numerous reasons why Islam expanded so quickly, the Muslim Empire was strong and powerful, they fought many battles and succeeded all, but how did that make them expand so quickly? Who were the Byzantines and Sassanids? In the end it came down to the two most important factors which were: the enemies were weak and Arabia was powerful.
The Byzantines and Sassanids were both empires that had constant war with each other for years. However none of these empires started weak. The Byzantine Empire was strong and powerful, eventually their luck decreased when the Byzantines were hit firstly with the plague of Justinian. The Plague of Justinian had been considered one of the deadliest plagues in history. This devastating contagion resulted in the deaths of an estimated 25 million to 50 million people.
The plague caused many deaths in the Byzantine Empire which caused to huge fall in the empire. Secondly Muhammad’s generals invaded the empire, some more of the Byzantine Empire fell which showed that they were unprepared and had no tactics to defend themselves. Then in 1610 civil war occurred because 2 enemies wanted the throne. Moreover by the time the Sassanid Empire increased, Muhammad’s generals had invaded Byzantine .The Sassanids divided themselves into four groups which were: the priests, warriors, secretaries and commoners.
The commoners were the only group who had to pay tax. The Empire was still extremely poor and the situation was worse because they were ruled by and 8 year old, named Yazdegered III. Both enemies were therefore weak, this is important because it shows not only both Empires were unprepared even though they went through major problems.