Why did Julius Caesar enlarge the Senate?
Similarly, why was the Roman Senate so powerful?
In the early ages of Rome, the senate was there to advise the king. During the Roman Republic the senate became more powerful. The senate also controlled the spending of the state money, making it very powerful. Later, during the Roman Empire, the senate had less power and the real power was held by the emperor.
Also question is, what changes did Caesar make to the Roman Senate?
Being a dictator had a large impact on his political career, and it permanently changed the Roman empire. During his rule Caesar greatly improved Rome's economy. When he came into power Rome had very widespread debt. To decrease the number of unemployed he offered jobs in other parts of the empire.
There were three key reasons for the rise of Caesar: his role in the First Triumvirate, his conquest of Gaul and his victories during the Civil Wars. These were the key stages in Caesar's career that allowed him to become the Emperor of Rome.