These regions are defined by their cultural similarities, including common religions, languages, and ethnicities.
ðiːz ɹˈiːdʒənz ɑːɹ dᵻfˈaɪnd baɪ ðɛɹ kˈʌltʃɚɹəl sˌɪmɪlˈæɹᵻɾiz, ɪŋklˈuːdɪŋ kˈɑːmən ɹᵻlˈɪdʒənz, lˈæŋɡwɪdʒᵻz, ænd ɛθnˈɪsᵻɾiz.