American multiculturalism emerged in 1964 with the passing of the Civil Rights Act. It began as a philosophy movement in Europe and the US in the late 19th century. American multiculturalism encompasses the literature and writings of various ethnic groups in the US, including African American writers, Latina/o writers, Asian American writers, and American Indian literature. It values maintaining separate cultural identities within a diverse society, represented by the "salad bowl" theory, rather than full assimilation under the "melting pot" theory.