According to the newest World Values Survey Denmark, with its democracy, social equality and peaceful atmosphere, is the happiest country in the world.
Zimbabwe, torn by political and social strife, is the least happy.

"I strongly suspect that there is a strong correlation between peace and happiness," said Ronald Inglehart, a political scientist at the University of Michigan's Institute for Social Research, who directed the study.

And, said Ingelhart, there is a strong correlation between happiness and democracy.

Puerto Rico and Colombia also rank highly, along with Northern Ireland, Iceland, Switzerland, Ireland, the Netherlands, Canada and Sweden.

Source: http://www.reuters.com/article/africaCrisis/idUSN30454695