In this class I've learned the history of our country. And in there I liked the Three countries Relationships of 고려 and 거란 and 송. In 10th century Northeast Asia was in the confusion. And at that time 고려 and 거란 and 송 was founded. And because those three countries were connected by complicated situations they always need it to coexist with containment. And this story was kind of confusing because it tells all the reasons why they have maintained their relationships and by depending on that the history changes. But I wanted to present about this topic even though it's complicated. Because I hope our people takes this part of the history as interesting.
