There are lots of interesting parallels to the modern world, not least of which is that the US system was explicitly modeled on roman republic.

Much has been written on the political / military parallels, but at a deeper cultural level there are interesting parallels between Rome <-> Greece and US <-> UK/Europe

Rome ultimately saw itself as a very practical regime. No need to re-invent philosophy, sciences, religion, etc....simply borrow and adapt everything from Greece.

They viewed Greece with an interesting mixture of both respect and simultaneously as a 'weak' vassal state. So Rome's elite sent their sons to Athens to study, while simultaneously viewing contemporary Greeks as effete, politically enfeebled, and culturally spent. Not very different how modern US sees UK/Europe in general.

Being a cultured roman meant that you would write to each other in Greek - there was an intentional cultural dependency that Romans felt towards Greece, while simultaneously holding a view that Greece didn't really matter and "all roads lead to Rome".

Even in things like food: I read an essay once that was exploring the idea of "did Rome see itself as a 'melting-pot'?" and the general takeaway was no, because it would just wholesale borrow every culture in came into contact with and then claim it was 'roman'.

So in Rome you didn't go out to eat "Greek food" or dine on "Egyptian food"...they simply just took all those ingredients and cooking styles and sort of blessed them as 'Roman'.

Lots of interesting parallels to US with things like Pizza. Modern day "Papa Johns" pizza is simultaneously linked / not-linked to it Neapolitan origins. At a certain level, the US sort of "invented Pizza" (not really of course, but get the drift). It took a provincial food from a far-off corner of the world and then re-exported it as a more explicitly "american" product.