This paper uses cross country regression analysis to look at the relationship between peace and per capita income, and, to see, after adjusting for per capita income, whether democracy and globalization are relevant for peace. The results suggest that there is an inverted U shaped relationship between peace and per capita income, and that both democracy and globalization are important factors, favorable important factors, for peace. Keywords: Peace, Development, Per capita income, Democracy, Globalization, Size of military, Prevention of war.