spread of written language
The Written Language The evolution of the writing system used by the Eastern Slavs has a history of planned language change and reform. This process of change from the beginnings of written language to the present-day writing system can be explained by citing four important events.he Written Language The evolution of the writing system used by the Eastern Slavs has a history of planned language change and reform. This process of change from the beginnings of written language to the present-day writing system can be explained by citing four important events.