The liberators were uneasy about Caesar's assumption of monarchical power and feared he aimed to end the republic and establish a hereditary monarchy against the ideals of the Roman Republic
The empire grew, making it hard for the government to control, weak and incapable emperors and corrupt officials, positions of power were largely purchased or obtained through violence, little desire to govern, leaving Rome in financial ruin and civil war, commoners died of starvation and disease, they lost hope in their government
Rome was divided into the Western and Eastern empires in the 4th century, the Western Empire struggled to survive, the Eastern Empire was both economically and militarily stronger
German tribes kept invading the Western Empire, taxes raised once again to finance war, the patricians tried to pay less than the plebeians, spending on war dried up, weakening the economy, the Western Empire ended in AD 476 due to one last German invasion