Complex sentence: Federline's parents divorced when he was eight years old; then he moved to Carson City, Nevada, with his mother, but returned to Fresno when he was 11, when he and his brother Chris moved to his father's house in Fresno.
Split into simpler sentences: Federline's parents divorced when he was eight years old; then he moved to Carson City, Nevada, with his mother, but returned to Fresno when he was 11. At 11 he and his brother Chris moved to his father's house in Fresno.