Mighty Dai Viet Empire

Trần Quốc Tuấn (Trần Hưng Đạo) was an excellent military strategist but underrated by historians across the world (expect Vietnam) but what if, his talent was driven too far? What if, with all of his self-esteem, he expanded the Dai Viet empire, making it a great power? And what if that impact changed how Vietnam is today?



POD
After the third Mongol invasion of Dai Viet, Tran Hung Dao didn't retire but stayed as the Supreme General. He wanted Dai Viet to become a great nation, just like its name ("Dai" = "big"). He looked to the expansion of the nation.

Timeline
1225  - The collapse of the Ly dynasty and the born of the Tran Dynasty.

1257 -  Trần dynasty was faced with the first Mongol invasion of Đại Việt

1284 - Second Mongol invasion of Đại Việt

1285 - Đại Việt victory

1287 - Third Mongol invasion of Đại Việt

1288 - Battle of Bach Dang River

1290 - Đại Việt invasion of Champa

1293 - Champa was annexed into Đại Việt

1295 - Most land of OTL's modern day Laos was annexed to Dai Viet