revision of textbook regading kojoson.

finally, the south korean government seems to take an action in response to historical controversies with China. As we discussed about Kojoson and Tan'gun in class, new textbook stirs debate over kojoson. Since I was educated in Korea, I had believed that what I learned at schools was true and never posed questions. Yet, here in the States, I can't argue and can't think critically about Korean history. Putting text book issues aside, I want the government or schools to think what is the best way to educate students about historical controversies.