Denmark is the world's happiest country while Burundi is the least happy, according to a new survey

The fourth World Happiness Report also found that countries where there was less inequality were happier overall. Switzerland, Iceland, Norway and Finland, which like Denmark have strong social security systems, made up the rest of the top five. The United States was the world's 13th happiest country, Britain was 23rd, China was 83rd and India was 118th. At the bottom of the 156 countries on the list was Burundi, which is experiencing severe political unrest and the threat of violence. It scored worse than Syria, where a civil war has killed more than 250,000 people over the past five years. The survey found that Syrians had a better healthy-life expectancy and were also seen as being more generous than Burundians and people in the three other nations - Togo, Afghanistan and Benin - making up the five least happy countries. Northern America, Latin America and the Caribbean and Europe were the happiest regions overall. South Asia and sub-Saharan Africa were the only regions where the average rating for well-being was less than five out of 10.