<P> Many distinct notions of prosperity, such as economic prosperity, health, and happiness, are correlated or even have causal effects on each other . Economic prosperity and health are well - established to have a positive correlation, but the extent to which health has a causal effect on economic prosperity is unclear . There is evidence that happiness is a cause of good health, both directly through influencing behavior and the immune system, and indirectly through social relationships, work, and other factors . One study which advances a holistic definition of prosperity is the Legatum Prosperity Index . </P> <P> In ecology, prosperity can refer to the extent to which a species flourishes under certain circumstances . </P>

Development is the main gateway of prosperity explain