explain how socioeconomic status is the theme in act one of pygmalion, how do the characters create the theme

Shaw chooses to deal with a society that is particularly stratified. British class-consciousness is based not only on economic power, as it is in many other societies, but also on history (historic class differences). The play highlights British people's recognition of accents to differentiate among themselves not only geographically (a Welsh accent is distinct from a Scottish accent, which is distinct from a Surrey accent), but also to distinguish (on another but related dimension of accents) the various social classes.