According to history textbooks, it is true that Korea was a colony of Japan but it was not yamato kings that controlled Korea. In 1905, Japan forcibly signed the Eulsa Treaty, and deprived Korea of diplomatic rights. And in 1907, Japan disbanded the Korean army through the New Korea-Japan treaty. Finally, in 1910, Korea became a colony of Japan after Japan signed the Treaty of Annexation of Korea and Japan. In other words, it is true that Japan ruled Korean peninsula but it was not Yamato kings. You said that Yamato kings extended their control to neighboring regions on the Korean peninsula. It is wrong information in your article. Please change or erase that sentence.
If you read my letter, I want you to change your article by changing or erasing that sentence which I told you that it is wrong information. And I want you to know that I am not criticizing your writing as bad writing, so I hope you do not feel bad while reading my letter. Thank you for reading my letter.
Good luck.