After WWII Korea was divided at the 38th parallel for purposes of military occupation. This line then solidified into a political frontier between American-supported Republic of Korea and the Soviet backed Democratic People's Republic of Korea. North Korean troops swept across the 38th parallel to attack South Korea.
When Napoleon was taken down, the use of serfs (or slaves) was also diminished. After the defeat of Napoleon democracy rose up, and the use of slaves fell.
