The primary measure of a nation's level of development is typically the Human Development Index (HDI). The HDI takes into account factors such as life expectancy, education level, and per capita income to provide a comprehensive understanding of a country's development. Other measures commonly used include the Gross Domestic Product (GDP), poverty rates, and literacy rates. However, it is important to note that development is a complex concept, and no single measure can fully capture the overall progress and well-being of a nation.
