Complex sentence: He was born on the island of Hauido and raised in Gwangju, where he took part in the 1980 uprising against Chun Doo-hwan's military dictatorship.
Split into simpler sentences: He was born on the island of Hauido and raised in Gwangju. He took part in the Gwangju uprising against Chun Doo-hwan's military dictatorship.