Where was this in Latin America? In Argentina, most cattle have gone from eating grass on the open pampas to being fed grain in cramped feedlots just like in the US, because it is more lucrative to use the land to grow soya. In Chile, a hell of a lot of food in the supermarkets is imported from the USA, namely from that country’s lower-end market (Walmart etc.). I can’t speak for other countries, but definitely some of Latin America countries are already basing their diet on relatively unnatural food.