When Julius Caesar died the empire was plunged into civil war. Octavian, Caesar's heir, eventually won and became the first emperor.
a few of ceasers natives did not like him to rule the country rome. so they killed him,and brutus too was against ceaser
His nephew Octavian (later Augustus) took over. This is the beginning of the Roman Empire. Before that, it was the Roman Republic.
I came, I saw, I conqured And no turning back if you go to war