Complex sentence: In the late sixties he remarried and some time in the 1980s he and his wife emigrated to Sweden, where they were well received and he was very nicely treated as a former victim of a totalitarian regime.
Split into simpler sentences: In the late sixties he remarried and some time in the 1980s he and his wife were allowed to emigrate to Sweden, where they were well received. He was very nicely treated as a former victim of a totalitarian regime.