Who Would Win?

So, you're an American in the year 1790. Your country just won its independence not too long ago, it just got a new Constitution and form of government, you've got a gigachad War Hero as President, and there's talk that soon your government will people the entire continent. Everything's going great.

Until suddenly, a series of portals open within the Georgia territory. These crazy guys in skirts with brushes on their heads are coming through it, manifesting out of nowhere. They seem to be... Romans? But how's that possible?

No one can explain it, but somehow Romans from the year 117 are teleporting into the year 1790, right here in America. The Romans themselves might not be able to explain the origin of these portals, but what they do know is that there's land here for the taking, and they want all of it. The Roman Empire's goal is to conquer the entire US in the 1790, and bring it under Roman Rule; a new frontier for their Empire. Are we bad enough dudes to stop them?

Some Pros for the Roman Side:

• The Romans can use the portals to come to America, but Americans can't use the portals to go back to Rome. Let's assume there's timey-wimey, "past can influence future, future can't influence past" reasons why this is.

• Pretty sure the Roman Empire had a higher population than 1790 US

• The US just got done fighting a war in like 1783

• The Roman army is probably more experienced and much larger in terms of sheer manpower (the US standing army wasn't created until 1789, but of course that's not to say no one there had military experience,, see last bullet point)

Some Pros for the US side: