First of all,food,shelter, and clean water are vital requirements,so fulfilment leads to satisfaction.thus, more wealth means more convenient access to them for the public.Moreover,rich countries are associated with high-quality educational systems and provide people with an opportunity to receive well-rounded tertiary educations without scrambling with high tuitions.This leads to the appearance of specialised people in various fields who can offer high-quality services to the public and promote general contentment.Apart from that,in countries which stand at the top economically,more investment in developing and upgrading roads and public transit can be seen.The existence of safer roads will decrease road fatalities and engaging high-tech vehicles in the public transport sector help people to save their time and energy ,and make them more content.