Final answer:
Life expectancy is higher in the US than in Sudan due to better healthcare, economic prosperity, and healthy living conditions, all contributing to a higher standard of living and health outcomes.
Step-by-step explanation:
The life expectancy is higher in a country like the United States than it is in Sudan primarily due to access to better healthcare, greater economic prosperity, and other social factors. These include high-quality healthcare systems that provide efficient treatments and preventive measures, greater GDP per capita which leads to a higher standard of living, and access to a variety of goods and services. Developed countries like the United States tend to have higher consumer spending which is associated with a healthy population, low infant mortality rates, high life expectancy rates, higher levels of productivity, and literacy rates.
Moreover, geography plays a role, as access to clean water, sanitation facilities, and nutrition significantly impacts the life expectancy. Wealth is a significant determiner of access to quality healthcare, and in countries where poverty is more prominent, such as Sudan, adverse health outcomes are more prevalent due to issues such as malnutrition and lack of prenatal care.
Ultimately, in the United States, advancements in health and education, secure infrastructure, and economic stability have all contributed to a higher life expectancy compared to Sudan, where these factors are less established.