Complex sentence: For most of its history, Pacifica gave each of its stations independent control of programming, then, during the 1990s, a major controversy arose over rumors that the national Pacifica board was attempting to centralize control of content, in order to increase listenership.
Split into simpler sentences: For most of its history, Pacifica gave each of its stations independent control of programming. Then, during the 1990s, a major controversy arose over rumors that the national Pacifica board was attempting to centralize control of content, in order to increase listenership.