In the beginning, it was just open land. Rome was founded when the sons of the god of war, were left by a river to drown. They were rescued and then as they grow up they defend the kind who left them to drown by the river.
450 years after Rome came into existance
I shall announce it though the land
we are finally stong enough to become an empire
We shall over though the emperor.
"I have all the riches in the land and shall create the biggest army."
When the extra taxes for the army happened the people became poor and were made at the emperor.
We have a huge army and need more taxes.
That is how this Roman Empire came to be and how it fell.