The imposition of regional language families is to enforce a recognition of local-ish similarity and to provide a distant veneer of common history that goes back some time. This represented in the functions of languages as they spread out an interact. The Old Imperial Language - Vaetum Lindua Amurium - is the common base on which all language in the area is spoken and thereby representing that in the past there was profusion of that tongue in politics and commerce enough so that anyone who wanted to do anything or go anywhere needed to actually speak the language of the area, or that by the existence of that Empire nearby people saw fit to adapt to the existence of those strong customs and adapted some or much of it.

Examples would include the influence of Latin over Western Europe to create the Romance Languages, where the gradual drift of Latin into the vulgate and beyond created Italian, and the gradual replacement of and intermingling with local dialects in Gaul created French, and its combination and likewise drift with other regional language created Spanish and Portuguese in Iberia. Or the influence of the Chinese Empire to spread the use of Chinese characters or similar writing systems abroad.

Creating and enforcing this concept is an experiment to help build the notion that no one in the world is really ever isolated either politically or culturally and is there to force the applicant to consider where they are in relations to others and how they might be due in part to areas marked off for pre-RP historical reasons as discussed in an application or with me.