Governor Nguyễn Văn Thoại (Thoại Ngọc Hầu) led 1,500 Vietnamese and Khmer labourers in widening an old channel from Long Xuyên toward Kiên Giang, about 31 km, in a month. Gia Long named it Thoại Hà and the hill beside it Thoại Sơn.
Construction
Thoại Hà canal dug
- 1817 – 1818
- Southeast Asia
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