Which rich countries are doing the most to help poor ones? Rich and poor nations are linked in many ways—by foreign aid, commerce, the environment, and more. Each year, the CDI rates rich-country governments on how much they are helping poor countries via seven key linkages: aid, trade, investment, migration, environment, security, and technology. The CDI then takes the average for an overall score.
To see if countries live up to their potential to help, scoring adjusts for size. So small countries can beat big ones.