Complex sentence: After studying classics for his Abitur in Gelsenkirchen, Steinberg studied law and economic science at the universities of Freiburg and Cologne before studying political science at the University of Michigan.
Split into simpler sentences: After studying classics for his Abitur in Gelsenkirchen, Steinberg studied law and economic science at the universities of Freiburg and Cologne. At which he studied political science at the University of Michigan.