Level of economic development: developed regions generally have a higher level of economic development, while less developed regions generally have a lower level of economic development.
Social security system: developed regions generally have better social security systems and provide more social security benefits, while less developed regions generally have weaker social security systems and fewer social security benefits.
Medical and health conditions: developed regions usually have better medical and health conditions, with more hospitals and medical equipment, while less developed regions usually have poorer medical and health conditions, with fewer hospitals and medical equipment.
Educational resources: Educational resources are usually richer in developed areas, with more schools and educational facilities, while educational resources are usually scarcer in less developed areas