The book gathered systematically a total of 27 in-depth writings covering some different issues & aspects of the history of the World and of Vietnam. Here are some the most representative ones: 1- The USA and the First Indochina War ( 1945 – 1954 ). 2 – Looking back South Korea – Vietnam economic relationship. 3 – Economic development of North Korea from 1953 to the years of the end of 20th century. 4 – Some about reforming policy of the King of Quang Trung ( 1788 – 1792 ). 5 – Some issues regarding the role of the Nguyen Dynasty ( 1802 – 1945 ) in Vietnam history. 6 – Some about foreign relationship of the Democratic Republic of Vietnam in the years of 1946 – 1954.