Of course you’re right, because the US was entirely vacant before a single unified culture simultaneously migrated to all corners of its borders. Weirdly enough, that happened after the advent of trains, cars, planes, the internet, etc. so there was no opportunity for pockets of subculture to develop.
Totally negates my point! I should have thought of that. Embarrassing.
You can almost literally drive from Paris to Moscow and back in the same distance as it takes to get from Los Angeles to New York. You think it’s impossible for a country as large as the United States to have unique subcultures?