How Did Roman Empire Fall

How did Roman empire fall? Roman empire; the most powerful, strong and invincible in Middle age. It covers around Mediterranean sea, Africa and Asia. Roman empire establish in 27 B.C. with Augustus Caesar as the emperor. And Roman empire still have power for a long time after that. But we have never know how does it ends. In the age that Roman empire is the most powerful empire. When it covers the area around Mediterranean sea. It looks good, but it makes Roman empire too big to rule, too big to control. Force the emperor to cut the empire into two parts, the east and the west. To be more easy with two emperor. In 330 A.D. Constantine the Great sets the new capital of the east at Byzantium instead of Rome with the new name, Nova Roma or New Rome. But people usually call it, the city of Constantine or Constantinople. At that time, there’s always the war with other tribe. The war with Germanic tribe in the middle of Europe make Romans tired.
Germanic tribe people come and ask to stay in Constantinople and they will fight in the battle for Romans in return. In 378 A.D. at the war in Adrianople, Visigoth tribe win over Romans and get Dacia state as their headquarter. In 391 A.D. Theodosius the emperor sets the law to make Christianity as the only one religion in Roman empire. The belief according to the religion, it heals all the thirst of war of the Romans. It makes the Romans have to hire Germanic tribe to fight for them in the battle with Germanic tribe. This also makes Romans