Complex sentence: The Romanian ideology changed after the Great Union due to the demographic, cultural and social alterations, however the nationalist desire for a homogeneous Romanian state conflicted with the multiethnic, multicultural truth of Greater Romania.
Split into simpler sentences: The Romanian ideology changed after the Great Union due to the demographic, cultural and social alterations. The nationalist desire for a homogeneous Romanian state conflicted with the multiethnic, multicultural truth of Greater Romania.