Actually, Japan had to fight with China in Korean Area In WWⅡ, because they invaded to the south. Japan just passed the Korea to protect Japan.
At this time, Korea was really poor soil so that there was no reason to have its place.
I saw the resoruce and it said that before Japan annexed Korea, there was no prosperity in Korea. After Japan annexed Korea, Korea growed very fast and Japan supplied a lot of source and skills.

When Japan lost WWⅡ to the Allied Contries, Korean people were afraid of being tried for fighting with Japan. So, Korean people said that Japan invaded our country and we were treated as slave.

After I finish reading this resource, I realized why Korea hates Japan and why they try to attack about Japan （ in many things）, because korea wants to hide the truth which Japan saved Korea. I believed that this truth reffers as difference in the cultural level of the people...

But, I did not say that Korean people are dirty and betrayal.
They have been educated that Korean people has to attack Japan to protect Korean decency.

If Korean had normal cultural level of the people, I could say there was no slaughter in Virginia state...