1 of 3 €-Europe is formed by 12 states. The most developed welfare state is probably in Sweden. Let's compare in some areas with the USA: •Life expectancy at birth: Sweden 80,6  Vs.  USA 77,5•Female employment: Sweden 76%  Vs.  USA 69%•%change CO2 emission 1990-2004:  Sweden +0,6%  Vs.  USA 19,8% •Student performance on reading,maths and science (average): Sweden exceeds 510 score while USA average is 487.