Minh Mạng starts to rule in Vietnam…
1820 CE
In the early years of Minh Mạng's government, the most serious challenge will come from one of his father's most trusted lieutenants and a national hero in Vietnam, Lê Văn Duyệt, who had led the Nguyễn forces to victory at Qui Nhơn in 1801 against the Tây Sơn Dynasty and had beem made regent in the south by Gia Long with full freedom to rule and deal with foreign powers.