Complex sentence: After the war and the German revolution, Vogel was a member of the German National Assembly, which wrote the Weimar Constitution, he would remain a member of the "Reichstag" until June 1933.
Split into simpler sentences: After the war and the German revolution, Vogel was a member of the German National Assembly, which wrote the Weimar Constitution. He would remain a member of the "Reichstag" until June 1933.