Complete the following sentence: Its cultural interests moved to historical research, philosophy (the theory of Positivism), as well as the two greatest political problems <unk> the peasant question ("see the
1907 Romanian Peasants' Revolt"), and the issue of ethnic Romanians in Transylvania (a region which was part of Austria-Hungary). It ceased to exist around 1916, after becoming engulfed in the conflict over Romania's participation in World War I; leading Junimists (Carp first and foremost) had supported continuing Romania's alliance with the Central Powers, and clashed over the issue with pro-French and anti-Austrian politicians.