The belief that white culture is superior is a foundational tenet of white nationalism. Adherents of this ideology advocate for the idea that the values, traditions, and practices of white people are superior to those of other cultural identities. This belief often manifests in calls for the preservation and advancement of what they define as white culture while simultaneously expressing disdain or opposition to multiculturalism and the integration of diverse cultural groups. This perspective is rooted in a historical context that is tied to racism, xenophobia, and a desire for racial purity.
The other options do not align with the central beliefs of white nationalism. The idea that all cultures should merge, that interracial relationships strengthen society, or that cultural exchange is beneficial for society reflect a more inclusive and egalitarian perspective, which is fundamentally opposed to the exclusivist views held by white nationalists. These alternative beliefs promote diversity, acceptance, and intercultural understanding rather than the supremacy of one racial or cultural group.