Lietuvos istorijos institutas

The article analyses the repercussions of the state relations between the Kingdom of Poland and the Grand Duchy of Lithuania in reforming the Commonwealth of Both Nations in mass communication in the period following the adoption of the Constitution of 3 May 1791. Mass communication is understood as messages addressed to a large, anonymous, and diverse audience, transmitted through communication media and channels. At the end of the eighteenth century, the periodical press acted as such means and channels. The research aims to determine to what extent and how the press of the Commonwealth of Both Nations at that time covered the Grand Duchy of Lithuania’s relations with the Kingdom of Poland and how much, if at all, was known to the users of the Western European means of communication, included in this analysis, about the 20 October 1791 document of the Mutual Assurance of the Two Nations.