When Nguyễn Hữu Chỉnh demanded Nghệ An back, Nguyễn Huệ sent Vũ Văn Nhậm and Ngô Văn Sở north; they took Thanh Hóa, broke Chỉnh's army and killed him, and Lê Chiêu Thống fled the capital, opening the Lê–Tây Sơn war.
War
Vũ Văn Nhậm's northern campaign and the fall of Nguyễn Hữu Chỉnh
- 1787 – 1788
- Southeast Asia
Meanwhile, elsewhere
- 1789 – 1799French RevolutionEurope
- 1792United States dollarNorth America
- 17th century – 19th centuryAge of EnlightenmentEurope
- 1775 – 1783American Revolutionary WarNorth America
- 4 July 1776United States Declaration of IndependenceNorth America
- 1765 – 1783American RevolutionNorth America
- 24 June 1812French invasion of RussiaEurope
- 30 April 1803Louisiana PurchaseNorth America