Lê–Mạc War

Lê–Mạc War (Chiến tranh Lê-Mạc) was a long time civil war waged between two royal families, House of Mạc and House of Lê.

The emperor of Lê dynasty was usurped by Mạc Đăng Dung in 1527. Lê Trang Tông, a prince of Lê dynasty, escaped to the Kingdom of Lan Xang (nowaday Laos). He claimed himself as the legitimate emperor in 1533, and was supported by Nguyễn Kim and Trịnh Kiểm. The civil war between these two royal families broke out.

In 1592, Thang Long, the capital of Mạc dynasty, was reconquered by Revival Lê dynasty, marking the end of Southern and Northern Dynasties Period. Mạc rulers fled to Cao Bằng Province with the direct support of the Ming and Qing dynasties until 1677.