After Muhammad's death in 632 CE, his friend Abu Bakr was named caliph and ruler of the Islamic community, or Ummah. Sunni Muslims believe that Abu Bakr was the proper successor, while Shi'a Muslims believe that Ali should have succeed Muhammad as caliph.
The Rashidun Caliphate (632–661) was led by Abu Bakr, then by Umar ibn Khattab as the second caliph, Uthman Ibn Affan as the third caliph, and Ali as the fourth caliph.
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The Roman empire fell due to the rise of Mongolian power and the increase of dismay and the death of Julius Ceasear which caused a civil war between his top ranking generals of who would rule. which cost the lives of thousands and wearing Rome weak and once the fighting stopped. Octavius ruled over Rome and went to war with Egypt where he found that Egypt was ready with a naval force and Mark Antonni his rival general with Cleopatra so he started a war with Egypt and and when he had a Mark and Cleopatra cornered in a palace Mark climbed out a window and was stabbed so Cleopatra killed herself once the war with Egypt had come to a close Mongols and barbarians continue to try to lay siege to Rome up until 1000 ad when it fell and to the byzantines and became apart of the Byzantine empire the end conclusion notesmany historians believe that octavius was one of Julius Caesar's illegitimate sons
THE ONE THAT FOR BASIC NEEDS OF THE WAR REFUGEES