I mean I know there’s been some “mass” emigration of Americans to other countries, like the thousands of southerners emigrating to Brazil after the civil war, 100k or so people moving to Canada or Mexico during the Vietnam war to avoid conscxtion etc..but as far as I can see there’s no “Americatown” in any of those countries. Why?

我知道美国一度有“大量”移民前往其他国家,如内战后成千上万的南方人移民到巴西,越战期间,大约有10万人为躲避兵役而前往加拿大或墨西哥等等……但据我所知,任何其他国家都没有“美国城”。为什么?