Which term expresses how individuals associate themselves with a group through values, traditions, customs, etc.?

Ethnicity

Explanation:

Ethnicity consists of a group of individuals who mutually identify upon experiences in the social, cultural, hereditary, or national areas. More simply, ethnicity, such as race and gender, are social, political, and economic concepts. Having this clear implies knowing that people are imperfect and our conceptions about them are not permanent or appropriate.