I mean the other 2 countries, Canada and Mexico, how similar are both of them to United States?? Both countries have a similar economy and democracy etc, and I think those two countries share things like supermarkets, stores, etc. I suppose the cultural differences are not a lot, that is very nice.
What, pray tell, is your definition of culture? Are local cuisine and regional delicacies a part of it? How about accents, speech patterns, and slang/dialects? You mention architecture and cities, so do layouts of cities, differences in urban planning ideologies, planned vs organic growth, or style of buildings get accepted as culture?
If you’re going to dismiss any social differences between cities, then what is the difference or culture between any two modern cities in Amwrica, Europe, Asia, or anywhere else, other than the language they speak?
“If you ignore the culture, this city has no culture!”
Everyone knows the only definition of culture is what year your city was founded and therefore how many old buildings it has. Oh and If you need to leave city center to see the ruins of the structures Europeans destroyed during colonization it doesn’t count. Only old buildings you can see from a tour bus counts as culture, duh.