Complex sentence: In Göttingen he was friends with Amory Coffin (1813--1884) and John Lothrop Motley; the three of them became friends with the later German Chancellor Otto von Bismarck there in 1832.
Split into simpler sentences: In Göttingen he was friends with Amory Coffin (1813--1884) and John Lothrop Motley. The three of them became friends with the later German Chancellor Otto von Bismarck there in 1832.