Complex sentence: Kuhn was born in Germantown, son of German immigrant parents, went to Sweden and studied Medicine and Natural history 1761--1764 at Uppsala University, where he was probably the only American student of Carolus Linnaeus.
Split into simpler sentences: Kuhn was born in Germantown, son of German immigrant parents. Then he went to Sweden and studied medicine and natural history 1761--1764 at Uppsala University, where he was probably the only American student of Carolus Linnaeus.