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The 10 happiest and least-happy countries (and why)

Photos Logo Photos | Slide 1 of 21: A real extended family of multi-ethnic and multi-generational backpackers in the wilderness pose of a selfie on a deserted beach surrounded by islands and forest with the ocean in the background.  Rainy day in a wilderness park.  Whiffen Spit, Sooke, British Columbia, Canada.

The United Nations Sustainable Development Solutions Network has released the 2018 World Happiness Report. The report took into consideration various parameters, including income, freedom, healthy life expectancy and generosity, and for the first time also examined the happiness levels of immigrants to rank 156 nations.

Here is a countdown of the 10 least-happy countries from the report.

© PamelaJoe McFarlane/E+/Getty Images
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