4. The Empire Split
The opinion of most of the historians varies when talking about the fall of the Roman Empire. The most common conclusions made about it are the ones saying that when the Empire was split into two. There is another debate about the religious affairs of that time as well which is considered to be the main reason behind the split.
Last rule on the Roman Empire was of Theodosius I who was mainly the reason behind the split of Roman Empire. He divided the Empire into two halves and gave to the two of his sons, giving Rome (West) to his son Honorius and Constantinople (East) to his other son Arcadius. This was the reason that Roman Empire came to its end as the empire couldn’t remain as powerful as it was before the split.