Wealth = how much money & how many possessions we have.
Quality of life = happiness, how good your life is. It includes wealth, but also other things that make you happy eg. water supply, health, education, freedom, nice weather, friends etc.
Development = improving people’s quality of life in an area or country. Eg. digging a new well for water or building a new school or hospital.
Sustainable development = improving people’s quality of life now so that it…