Complex sentence: Kia built the small Brisa range of cars until 1981, when production came to an end after the new military dictator Chun Doo-hwan enforced industry consolidation, meaning Kia had to give up passenger cars and focus entirely on light trucks.
Split into simpler sentences: Kia built the small Brisa range of cars until 1981, when production came to an end after the new military dictator Chun Doo-hwan enforced industry consolidation. This forced Kia to give up passenger cars and focus entirely on light trucks.