The Problem of the Chronological Frames of Determination of the History of the Grand Duchy of Lithuania in Modern Western Historiography

The problem of historical processes periodization is quite debatable in modern historiography. There are many state historical schools’ traditions that because of political conjuncture are trying to make their statehood history more ancient. This article is devoted to the problems of periodization of The Grand Duchy of Lithuania. The authors attempt to change generally accepted chronology of that state formation.