Japanese to free the slaves that accounted for 30% of the population. English https://en.wikipedia.org/wiki/Gabo_Reform Korean https://ko.wikipedia.org/wiki/%EA%B0%91%EC%98%A4%EA%B0%9C%ED%98%81 Japanese https://ja.wikipedia.org/wiki/%E7%94%B2%E5%8D%88%E6%94%B9%E9%9D%A9