Race is one of the fundamental components of descriptive systems of difference in society (e.g., along with sex-gender, class, ability, and sexuality). At its inception, race was defined as a natural or biological difference, indicated by physical features such as skin colour, hair texture and other bodily features. Race became a key system of classification in European imperial and colonial domination to justify hierarchies of humanity.
There is a long history of asserting racial differences as natural and inevitable, as evidence of different levels of intelligence, ability, humanity, worth, and so on. Despite efforts to attribute differences between different groups to biological or genetic differences, science demonstrates that differences within different groups are greater than the differences between the so-called races. As such scholars and researchers recognize that race is a socio-historical and social construct that structures lived experience.