What does melting pot of immigration mean vs tossed salad of immigration?

The "melting pot" of Immigration refers to the idea that immigrants assimilate into a single, cohesive culture, blending their diverse backgrounds into a unified national identity. In contrast, the "tossed salad" metaphor emphasizes the coexistence of various cultures within a society, where each retains its unique characteristics while contributing to the overall diversity. This perspective values multiculturalism and the idea that different cultures can live side by side without losing their individual identities.