CEVAP:

Often, a previously dominant group can have its cultural patterns challenged. The United States, for example, has been built upon immigration. Therefore, the US has termed itself a melting pot as immigrants adopt a common language and adhere to other culture patterns. Recently, the term has been replaced by salad bowl as assimilation to original immigrants from the British Isles (in terms of language, religion, and other customs) does not happen on a regular basis.