Complex sentence: Consistently, the founding of the KPD (Communist Party of Germany) was declared to be the decisive turning point in German history, but in spite of ideological bias, historical research in the GDR expanded detailed knowledge of the German Revolution.
Split into simpler sentences: Consistently, the founding of the KPD (Communist Party of Germany) was declared to be the decisive turning point in German history. But in spite of ideological bias historical research in the GDR expanded detailed knowledge of the German Revolution.