베트남을 둘러싼 종주국, 번국, 제국주의 국가 간의 삼각관계가 치열하게 전개된 시기가 1862년부터 1885년까지였다.
It was from 1862 to 1885 that the triangular relationship between the states of slavery, prosperity, and imperialism surrounding Vietnam was intense.