GOVERNMENT In order for societies to thrive, they need a good government to keep them under control, and to help support them. Also a good government will help with poverty.
LOW POVERTY Typically with a higher poverty level, the more crime there is. With more crime there is usually more deaths and, well, people need people.
HEALTH CARE It can be actual health care or doctors, either way people need to stay healthy because if everybody was sick the society would fall apart due to lack of healthy people to take care of things.