LTXX a. pradžioje daugelis nuo XIX a. pradžios brandintų ir puoselėtų socialinio bei politinio pertvarkymo projektų įgavo tobulesnes formas. Vienos idėjos pasižymėjo ypatingu raiškos intensyvumu, tačiau neretai jos išsekdavo, apimtos laikino sąstingio. Bet istoriškai kartą nepavykę sumanymai - lyg šaltinis, trykštantis jeigu ne pasikartojimo, tai bent naujo suvokimo ir kitoniško išgyvenimo versme [p. 80].
ENTwo political ideas of the 19th and the early 20th centuries of co-operation between the nations of the region are compared in the article and Römeris’s attitude towards them is shown. The project of the restoration of the historical GDL was developed most consistently by the political trend of the krajowcy (from the Polish kraj a country). The main idea of this project was citizenship of the country, which is equal territorially to the nucleus of the lands of the historical GDL (including Lithuania, Samogitia, Bielorussia, Volynia, Curonia, etc.). The notion of the GDL in this project was different from that of Lithuanian nationalists who treated the history of the GDL from the ethnocultural point of view; both the former and the latter, however, were for the restoration of the GDL. There were a few variants of the Baltic unity project as well. The ethnocultural variant (Lithuanian - Latvian unity) developed at the beginning of the 19th century, lasted until the middle of the 20th century and had not been forgotten by the Latvian and perhaps also Lithuanian emigres. The idea of an international Baltic Unity (Lithuanian-Latvian-Estonian-Finnish unity with the prospect of alliance with Scandinavian countries) was developed after World War I and the formation of the Baltic states.The most important achievement in this field was the Baltic Entente established in 1934. Römeris was one of the most active krajowcy politicians. He was for a common Lithuanian and Latvian citizenship and cultural co-operation in the restored GDL which did not necessarily have to be a monarchy. He was for active international co-operation, for orientation towards Scandinavian countries and for common attempts to solve the Vilnius conflict between Lithuania and Poland.