5 ESSENTIAL ELEMENTS FOR GK88

The civil war among the Lê-Trịnh and Mạc dynasties led to 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors on the Mạc royal spouse and children fled on the northern mountains while in the province of Cao Bằng and continued to rule there until eventually 1677 when Trịnh Tạc conquered th