There are many variables that determine the level of health, including social, cultural, economic and other factors. One problem that may hinder the improvement of health level is the accumulation of social and economic inequality. In the past 25 years, a series of cross-border empirical studies have distinguished social and economic inequality. It is linked to morbidity, mortality, life expectancy, and medical service levels. Research has found that under the same conditions, the more unfair a country is, the worse its health.
passage, we can conclude that:
In the past ten years, the national income of country B has increased, nutrition has improved, and the resources invested by the state in health care have also increased. Then compared with ten years ago, the health level of nationals of country B must be greatly improved.