Great question. The problem is each person will (usually) give you a different answer (that is representative of their own culture). We all are a product of our own culture. Having lived in various countries with radically different foods, I've learnt to be cynical of 'advice' that you "have to" eat this or that food. For example, I lived in Japan and I know a lot of Asian mothers - they don't eat a lot of dairy and are often mystified by western peds advice that they must give dairy products when their kids usually won't drink milk. Yet in Japan they sprinkle sesame seeds on their rice, they give dried up fish to toddlers to chew on, they eat soft fish bones, they eat lots of types of vegetables - they get enough calcium and iron I'm sure.
I had a good laugh once when I lived in Denmark. I'm Australian and was talking to my friend there, another Australian mother - her Danish health visitor (for her baby) insisted my friend give the baby (~1 yo) dry teething rusks to chew on. My friend explained that her Australian baby health book recommended a lamb chop bone to chew on. I remember being given bones to chew on as a kid too
Danish health visitor thought my friend was nuts - was horrified at giving a child bones, that alone lamb which was hideously expensive in Denmark. In fact a fave Danish baby food is mixing that heavy dark rye bread with sweet dark beer (it's non alcoholic). It's actually quite healthy but we found that rather odd. And in Australia, our fave Vit B source is Vegemite, which other countries find equally odd.
I don't know about the exact RDA amounts for vitamins/minerals in other countries - you'd probably need to look up each countries health department to find out.
I certainly like getting ideas for getting more of certain nutrients from other cultures when you have a toddler that refuses to eat a particular food group.
I had a good laugh once when I lived in Denmark. I'm Australian and was talking to my friend there, another Australian mother - her Danish health visitor (for her baby) insisted my friend give the baby (~1 yo) dry teething rusks to chew on. My friend explained that her Australian baby health book recommended a lamb chop bone to chew on. I remember being given bones to chew on as a kid too

I don't know about the exact RDA amounts for vitamins/minerals in other countries - you'd probably need to look up each countries health department to find out.
I certainly like getting ideas for getting more of certain nutrients from other cultures when you have a toddler that refuses to eat a particular food group.