Complex sentence: Fritz Schüller did not flee with the rest of the family to Switzerland but from Paris, via Spain to North Africa, then to America and in 1941 he eventually succeeds in bringing his family into the United States.
Split into simpler sentences: Fritz Schüller did not flee with the rest of the family to Switzerland but from Paris, via Spain to North Africa, then to America. In 1941 he succeeded in bringing his family into the United States.