Quoting: zuzi0mail
they communicate in Polish, eat Polish food , listen to Polish music and share similar customs
Yet they live in America? Surely their pure-polishness get influenced by out-of polish customs, food, music etc. Or they'd still be back in poland.
in places with big Polish populations like Chicago you don't even have to speak english to live , work or run a business as you handle everything at Polish run banks, Polish lawyers, Polish bakieries, Polish grocery stores, Polish doctors, Polish coffee shops, bars, restaurants and so on.