Becoz feudalism is the the dominant social system in medieval Europe, in which the nobility held lands from the Crown in exchange for military service, and vassals were in turn tenants of the nobles, while the peasants were obliged to live on their lord's land and give him homage, labour, and a share of the produce, notionally in exchange for military protection.
Dialect. Dialect is one of the multiple forms of the same language. If a new dialect is created from a language it has the potential to become a language of its own.
