Afghanistan is a multiethnic country, with its population comprising a variety of social, linguistic, cultural, and tribal communities. The formal categorization of ethnicity in Afghanistan is a relatively recent development, emerging primarily in the 20th century and gaining political significance during the conflicts that began in the 1970s.
Major ethnic categories traditionally identified in Afghanistan include Pashtuns, Tajiks, Hazaras, and Uzbeks. Minor categories include Aimaqs, Turkmens, Balochs, Nuristanis, and Arabs, among others. However, the boundaries between these communities are fluid, with language, self-identification, urban or rural residence, and regional affiliations intersecting in complex ways.