Final answer:
A common language in a multicultural nation is essential for communication and national identity, with English serving that role in the United States. While it aids in social cohesion, the dominance of a single language can lead to the marginalization of others, but efforts are made to preserve them.
Step-by-step explanation:
Establishing a common language in a multicultural society can serve as a crucial bond among people from different ethnic backgrounds to facilitate the exchange of ideas and assimilation into a new culture. Language plays a pivotal role in the formation of national identity and can either unify a nation or lead to divisions. In the history of many countries, including the United States, the established dominant language often offers significant advantages in terms of employment and trade.
This incentivizes non-native speakers to adapt and possibly neglect their original languages, which can lead to the endangerment of these languages. A common language, such as English in the United States, not only aids in communication but also reflects upon societal values and influences international alliances. Efforts have been made to preserve and revitalize native languages, recognizing the deep cultural knowledge they embody.