Well well... Luxumberg is the richest country in the world due to its highest per capita income. Regarding the most peaceful country, Scandinavian country Norway, Sweden and Denmark are the most peaceful countries in the world. if you see the latest report of the UN servey Norway has second highest percapita income i.e.US$ 48,000 and Norway is the most peaceful country in scandinavia. So that in overall gold medal goes to Norway.