monoculturalism
/ˌmɒnə(ʊ)ˈkʌltʃ(ə)rəlɪz(ə)m/ /ˌmɒnə(ʊ)ˈkʌltʃ(ə)r(ə)lɪz(ə)m/Sociology
noun
The policy or process of supporting, advocating, or allowing the expression of the culture of a single social or ethnic group.
Origin
1970s. From monocultural + -ism. Compare earlier biculturalism, multiculturalism.