Complex sentence: When the National Socialists came to power in Germany in 1933, he was removed from his post and moved to Geneva, Switzerland and taught international law at the Graduate Institute of International Studies from 1934 to 1940.
Split into simpler sentences: When the National Socialists came to power in Germany in 1933, he was removed from his post. He relocated to Geneva, Switzerland where he taught international law at the Graduate Institute of International Studies from 1934 to 1940.