I remember, around 1990, a Russian exchange student almost going into shock when she went in her first Walmart store.
My daughter thought it was funny as we consider such a store “common”.
Watch the movie "Moscow on the Hudson". One of Robin Williams' better movies. It has a scene just like that.
We had the same thing happen with an exchange student from South Africa at a publix. She was amazed so much food could be in one place.