Critical Mass

Your Roman kingdom fallen since the birth of Christ ours, The legion is superior and evolved yours is a devolved forlorn or as one would call it outdated. We all serve Jupiter and Mars same as the Legate and Caesar.

In a normal form: We are the second generation of the Roman empire just more advanced with guns and such, so making fun of us is just like making fun of yourself.

Oh... you are not us, far from it. Stop pretending, We do not need fire arms. With your pitiful excuse for armor, our javelins will do just fine. And once we conquer your land, we will conquer the rest of the Americas.

Also we will learn to use your technology and what happens then... We will conquer you, and we will replace your culture with good Roman culture!

(actually the roman empire lasted until the 15th century, it just got a name change)

Yes the roman empire but not the roman republic it died at 27 BC and the legion is just the roman military.