Why is culture important to the human society and the study of social psychology?

Culture is a distinct belief,custom,ritual,language and a way of life of a social group or community that give identity and a sense of belonging to that social group.It is passed down from generation to general as heritage .There are simultaneous cultures through historical time giving rise to distinct and diverse cultures yet as unity to society.This acceptance of belonging and pride with identity ,the behavioral patterns within the social group and in interaction with other social groups and communities helps in the study of social psychology of the individuals in the social cultural community and the community itself.