In 3-4 sentences, briefly explain two causes for the fall of rome. someone me

Roman Emperor Diocletian divided the Roman Empire into two. The eastern empire and the western empire. This division, divided resources making the eastern empire rich and the western empire poor. With Rome engaging in so many wars, its military weakened to the point of hiring mercenaries who were not loyal to the government. Without patriotism of the mercenaries, they did not have motivation to win wars because they were only motivated by money, this weakened their military unit leading to their collapse.