Complex sentence: Strasser fled first to Austria then Prague (where he resisted Hitler), Switzerland and France, and then, in 1940, he went to Bermuda by way of Portugal, leaving a wife and two children behind in Switzerland.
Split into simpler sentences: Strasser fled first to Austria, then to Prague (where he resisted Hitler), Switzerland and France. In 1940, he went to Bermuda by way of Portugal, leaving a wife and two children behind in Switzerland.