What causes impact to a countries life expectancy?

A country's life expectancy is influenced by various factors, including healthcare access and quality, socioeconomic status, nutrition, and lifestyle choices. Environmental factors, such as pollution and living conditions, also play a crucial role. Additionally, public health policies, disease prevalence, and educational levels can significantly affect overall health outcomes and longevity. Collectively, these elements shape the health landscape and ultimately determine life expectancy in a population.