In today's world, the relationship between Religiosity and socioeconomic development arouses many questions. Some countries, such as Saudi Arabia or the United States, combine a strong religious imprint with significant economic wealth. Others, such as Norway or Japan, which are mainly secular, are among the most advanced nations in terms of quality of life and social equity. But how do these two groups really compare themselves? What are the richest countries among those with a state religionand how do they position themselves in front of secular countries in international rankings ? This article explores these questions by examining key data on wealth, HDI (human development index), geopolitical positioning and...