That is the correct spelling of the plural noun "ethnicities" (ethnic affiliations, plural of ethnicity).
The ethnicities in the US military generally represented the ethnicities of the US population.
Leo's ethnicities include: Italian, Russian, German, and Polish.
they have just as much as other ethnicities
ethnicities
Latin European
Australian
Mexican
Indians, blacks, and whites
Mexican American
Black American
yes and no
Although Sikhism is a religion that obliterated the Caste System, Sikhism does run with many ethnicities in general. Ethnicities included are from both Islamic Tribes and Hindu Castes, respectfully. Tarkhans, Jatts, Sainis, Khatris, Dalits, etc. are just to name a few.