Complex sentence: Carol Dunlop (1946--1982) was a writer and photographer from Canada, who married and traveled with Julio Cortázar to numerous destinations including Poland, where she participated in a congress of solidarity with Chile.
Split into simpler sentences: Carol Dunlop (1946--1982) was a writer and photographer from Canada, who married and traveled with Julio Cortázar. Dunlop accompanied Cortazar to numerous destinations including Poland, where she participated in a congress of solidarity with Chile.