Compare the differences between West Rome and East Rome around the 5th century.

The demise of the Visigoth-Xiongnu alliance led by alaric in Western Rome is a typical slavery society. The demise of western Rome also meant the end of the slavery era in Europe, and Europe began to enter the feudal era. At this time, Byzantium, located in the eastern Mediterranean (after Constantine moved its capital to Byzantium, the eastern Rome was also called Byzantium, and Byzantium is now the capital of Turkey), although it did not perish with the western Rome, it also began to transition to a feudal society. Byzantium became one of the most developed business districts in Europe because of the developed port shipping, rich tax revenue and barbarian rampage in other parts of Europe at that time. Therefore, Byzantium had a solid economic foundation and hired enough troops to fight against barbarians to the west and expand its territory to the east. It existed for 1200 years until it was destroyed by the Ottoman Turkish Empire. I summed it up myself I don't know if I can. Hehe)