Complex sentence: Accessed 17 April 2013 On 26 April 2013, South Korea decided to withdraw all remaining staff, and on 4 May, the last seven South Koreans left the Kaesong Industrial Region, which thus was completely shut down.
Split into simpler sentences: Accessed 17 April 2013 On 26 April 2013, South Korea decided it would withdraw all remaining staff. On 4 May, the last seven South Koreans left the Kaesong Industrial Region, which thus was completely shut down.