What did Japan do to Korea?

https://www.quora.com/What-did-Japan-do-to-Korea/answer/%E6%A1%91%E7%94%B0-%E5%81%A5%E5%8F%B8-Kuwata-Kenji?prompt_topic_bio=1

Korea and Japan united by The Japan–Korea Treaty of 1910.

1 Japan abolished the class system and released slaves.

2 Abolished human trafficking and arrested many human traffickers.

For this reason, Korea continues to “hate” Japan.

歴史を直視しろ Japan faces history