Complex sentence: Educated at the Potsdam "Gymnasium" until 1928, followed by the "Realgymnasium" there, Blumenthal studied law and economics for two years at the Universities of Königsberg and Munich.
Split into simpler sentences: Educated at the Potsdam Gymnasium until 1928, followed by the Realgymnasium there. He studied Law and Economics for two years at the Universities of Königsberg and Munich.