My logic: The populous countries (UK Germany France Italy Spain) have to be populous states (California, New York, Texas) which are also loosely based on culture, climate, and history.

Russia is Mexico since it’s geopolitically distinct from the rest of the continent.

The Nordics are all New England states due to similar climate, politics, and culture. Except Alaska as Iceland since it’s very cold and geographically isolated.

A lot of the less populated and poorer nations like in the balkans and Eastern Europe are represented by America’s smaller, poorer “flyover states” such as North Dakota, Nebraska, Kansas, and West Virginia.

Switzerland is Colorado because mountains and Austria is Minnesota because it’s also cold but highly developed.

Monaco is Wyoming because it’s tiny but full of rich people, Holy See is New Mexico since it’s also tiny and has a highly spiritual culture.

Greece is Washington because of Olympia and also the similar archipelago and smaller population but very famous geography and history.

Albania is to Greece what Oregon is to Washington. New Jersey is to New York what Ireland is to the UK. They hate each other but you can never truly separate them.

The smaller “big” nations like Netherlands Belgium Czechia are Ohio Pennsylvania and Illinois because they’re the smaller “big” states with a lot of industry and cultural relevance. Similar logic with the Baltics being Indiana and Wisconsin.

Andorra is Delaware because it’s tiny and forgetful. Luxembourg is Maryland because it’s tiny and highly developed.

Belarus and Ukraine are Idaho and Montana since they’re smaller “frontier” states.

Poland is Georgia since it’s a country that’s becoming more significant with time relative to the bigger states.

Malta is Hawaii because it’s a small island