Common Tongue refers to a shared language or dialect that facilitates communication among people from different linguistic backgrounds. It often emerges in multicultural societies where diverse groups interact regularly. This language can be a simplified version of a more complex language or a blend of various languages, making it accessible to a wider audience. In historical contexts, Common Tongue can also refer to specific languages, such as Middle English in medieval England, which was used by the general populace. Today, languages like English serve as a global Common Tongue, enabling international communication in business, travel, and online interactions.