After the control and constant conflict between the Roman Empire and the Persian Empire that lasted for hundreds of years, new powers rose on the land of the Middle East. This power was able in a very short time to control many lands of the Persian state and also the Roman state to the point that the new power was able to completely eliminate the Persian Empire. Indeed, the new state that the Prophet Muhammad founded from Medina was able to expand and rise to the point that it extended from Spain in the west to the borders of China in the east. The foundations that the Prophet Muhammad laid and the rules on which the state was built, which were initially based on a religious basis, but with time the Muslim caliphs did not adhere to this matter, and as a result of the control of these caliphs over the land that was under the control of the Persians and Romans, the Muslim caliphs began to imitate these princes and rulers, whether in the way of dress or even living in palaces and indulging in a life of amusement and luxury, which led with time to the loss of some of the values ??that the Muslim caliphs inherited from the Prophet Muhammad, and began to replace it with the love of money and power to the point that some Muslim rulers reached the point of causing sedition and conflicts between some rulers for the sake of power, and this made the Islamic countries enter into long periods of wars, conflicts and strikes as a result of the conflict between Muslim rulers over power, and we will review in this book the most prominent periods of conflicts and wars between Muslim rulers throughout the Islamic ages.