30BC: Ottaviano Augusto becomes the first Imperator, in his 44 years of principate he will bring to the empire peace and prosperity!
70AD: Vespasiano is the winner of first great empire's civil war,rebuilding Roman world after the Nero's dark ages.
98AD: Traiano becomes imperator after that the senateman Nerva adopted him,he will start a gold age for the empire getting it to biggest extension!! 117AD-180AD Adriano,Antonino Pio and Marco Aurelio administrate the empire during his richest and most pacific period, with their good administration Rome lives its golden age.
193AD: Settimio Severo wins the civil war started after the death of Commodo starting the Severan dinasty, his heirs will not be as good as him. 252-285AD Rome lives the peak of III century's crisis,onli the emperor Aureliano will be able to reunite the empire breacked in 3 parts and the great reformer Diocleziano will give to Rome militar,politic and social cohesion after decades of caos. 325AD:Costantino rules alone over the empire and christianity is for the first time accepted by the imperial government.