Complex sentence: He attended high school (Gymnasium) in Austria, Germany, and Switzerland and in 1975 immigrated to Canada where graduated in 1989 with a Ph.D. in Comparative Literature at the University of Alberta.
Split into simpler sentences: He attended high school (Gymnasium) in Austria, Germany, and Switzerland. In 1975 he immigrated to Canada where graduated in 1989 with a Ph.D. in Comparative Literature at the University of Alberta.