Conflicts & Resolutions · War

Forty Years' War

1385–1424 · 14th century

The Forty Years' War was a series of campaigns between the Burmese-speaking Ava Kingdom of Upper Burma and the Mon-speaking Hanthawaddy Kingdom of Lower Burma. Ava's kings Swa Saw Ke and Minkhaung I tried repeatedly to conquer the south, while Razadarit of Hanthawaddy held them off and raided north. Neither side prevailed, and the two kingdoms remained separate.

Forty Years' War
Image: Hybernator · CC BY-SA 3.0 · Wikimedia Commons

Mentioned in 2 state histories

Hanthawaddy KingdomAva Kingdom

See also

Cite this entry
APA
The Epoch Institute. (2026). Forty Years' War. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/forty-years-war
MLA
“Forty Years' War.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/forty-years-war. Accessed .
Chicago
The Epoch Institute. “Forty Years' War.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/forty-years-war.
Harvard
The Epoch Institute (2026) ‘Forty Years' War’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/forty-years-war (Accessed: ).

Last reviewed October 2026Random entry ↻