Cite: https://cn.nytimes.com/health/20180504/even-a-little-exercise-might-make-us-happier/en-us/

Happiness

What is human life’s chief concern?

One of the answers we should receive would be:” It is happiness.” — — — William James.

Happiness is what all mankind has been pursuing and has never stopped.

All people in the world hope that they have a good family, a satisfactory job, and a considerable income, all of which also create a sense of happiness for a person.

Happiness has a great influence on our lives. A happy life will make you full of energy rather than full of stress. So, what factors can affect happiness? From an individual perspective, it may be economic status, social status, etc. From the perspective of the country, is the national happiness index closely related to factors such as economic development, social welfare, and environmental quality? Therefore we decide to explore the happiness index of each country as our project for data visualization.