Sources:
Korea: A History (2022) by Eugene Y. Park. Stanford University Press, California.
Korea: A New History of South & North (2023) by Victor D. Cha and Ramon Pancheco Pardo. Yale University Press, New Haven.
Pictures:
https://commons.wikimedia.org/wiki/File:Dinosaur_Ridge_of_Seoraksan.jpg ; https://commons.wikimedia.org/wiki/File:Chiak_Scenery.jpg ; https://commons.wikimedia.org/wiki/File:%EC%B0%B8%EC%84%B1%EB%8B%A8_%EC%86%8C%EC%82%AC%EB%82%98%EB%AC%B4.jpg ; https://en.wikipedia.org/wiki/File:A_Fragment_of_Biography_of_Bu_Zhi_History_Books_of_Three_Kingdoms_01_2012-12.JPG ; https://commons.wikimedia.org/wiki/File:Front_view_of_Seokguram_from_front_chamber.jpg ; https://en.wikipedia.org/wiki/File:Liao_circuits.png ; https://commons.wikimedia.org/wiki/File:Gilt-bronze_shoes_at_National_Museum_of_Korea.jpg ; https://commons.wikimedia.org/wiki/File:Goryeo-Illustrated_manuscript_of_the_Lotus_Sutra_from_Gwangdeoksa_temple_in_Chenan,_Korea_03.jpg ; https://commons.wikimedia.org/wiki/File:GreatYuan(UPT2).png ; https://commons.wikimedia.org/wiki/File:Statue_of_Kwon_Yul.jpg ; https://commons.wikimedia.org/wiki/File:KOCIS_Jeungdo_(Jeung_Island),_near_Mokpo_City_(6285663754).jpg ; https://en.wikipedia.org/wiki/File:Mongolia_in_1636.svg ; https://commons.wikimedia.org/wiki/File:Gyeongbokgung_20141015_04_(15361990118).jpg ; https://commons.wikimedia.org/wiki/File:1975%EB%85%84_8%EC%9B%94_%EC%84%9C%EC%9A%B8_%EC%A2%85%EB%A1%9C_2%EA%B0%80_%EA%B1%B4%EB%84%90%EB%AA%A9_1.jpg ; https://en.wikipedia.org/wiki/File:%EA%B3%A0_%EC%9D%B4%ED%95%9C%EC%97%B4_%EC%B6%94%EB%AA%A8_%EA%B5%B0%EC%A4%91.jpg; https://en.wikipedia.org/wiki/File:Asienkrise.svg ; https://djsworlds.files.wordpress.com/2019/05/71n6despu2l._ri_.jpg?w=1400&h=1050&crop=1 ; https://en.wikipedia.org/wiki/File:Dokdo-West-Isle.JPG ; https://en.wikipedia.org/wiki/File:Dokdo-East-Isle.JPG ; https://commons.wikimedia.org/wiki/File:Teheran-ro_Yeongdong-daero_crossing_7.jpg ; https://commons.wikimedia.org/wiki/File:%EA%B5%AC%EB%