The HDI is composed of three main components: life expectancy, education, and per capita income. Gender equality is not a direct component of the HDI, although it is an important factor that can influence a country's overall development.

Life expectancy at birth is the most widely used indicator of health and longevity in the HDI. It reflects the average number of years a newborn is expected to live if current mortality patterns remain unchanged.

The HDI uses two indicators of education: mean years of schooling and expected years of schooling. Adult literacy rate and school enrollment rate are not directly included in the HDI, although they are important factors that can influence a country's educational attainment.

Gross national income (GNI) per capita, adjusted for purchasing power parity (PPP), is the primary indicator of economic well-being in the HDI. It reflects the average income of a country's citizens, adjusted for the cost of living.

Income inequality can lower a country's HDI ranking because it can lead to disparities in access to healthcare, education, and other essential services. This can result in lower life expectancy, lower educational attainment, and lower per capita income for a significant portion of the population.

Environmental degradation, such as air pollution, water pollution, and deforestation, can have negative impacts on health, education, and economic well-being. It can lead to lower life expectancy, lower educational attainment, and lower per capita income, which can result in a lower HDI ranking.

Gender inequality can lower a country's HDI ranking because it can lead to disparities in access to healthcare, education, and other essential services for women and girls. This can result in lower life expectancy, lower educational attainment, and lower per capita income for women, which can drag down a country's overall HDI ranking.

Increasing military spending is not a strategy that countries can adopt to improve their HDI ranking. Military spending does not directly contribute to improvements in health, education, or economic well-being, which are the key components of the HDI.

Access to clean water and sanitation can raise a country's HDI ranking because it can lead to improvements in health and well-being. Clean water and sanitation can reduce the incidence of waterborne diseases, improve hygiene, and promote overall health. This can result in higher life expectancy and lower infant mortality, which can contribute to a higher HDI ranking.

Abundant natural resources are not necessarily a factor that can contribute to a country's low HDI ranking. Natural resources can be a source of wealth and economic development, which can lead to improvements in health, education, and economic well-being. However, if natural resources are not managed properly, they can also lead to environmental degradation and conflict, which can have negative impacts on the HDI.

Political stability can both lower and raise a country's HDI ranking. Political stability can create a conducive environment for economic growth, investment in education and healthcare, and the promotion of gender equality, all of which can contribute to a higher HDI ranking. However, political instability, such as civil wars, coups, and corruption, can disrupt economic activity, damage infrastructure, and lead to a decline in health and education services, which can result in a lower HDI ranking.

The HDI is composed of three main components: life expectancy, education, and per capita income. Gender equality is not a direct component of the HDI, although it is an important factor that can influence a country's overall development.

Life expectancy at birth is the most widely used indicator of health and longevity in the HDI. It reflects the average number of years a newborn is expected to live if current mortality patterns remain unchanged.

The HDI uses two indicators of education: mean years of schooling and expected years of schooling. Adult literacy rate and school enrollment rate are not directly included in the HDI, although they are important factors that can influence a country's educational attainment.

Gross national income (GNI) per capita, adjusted for purchasing power parity (PPP), is the primary indicator of economic well-being in the HDI. It reflects the average income of a country's citizens, adjusted for the cost of living.