Historedia
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Signing of the Treaty of Saigon

When
5 June 1862
Where
Saigon
Part of
Vietnam cedes Biên Hòa, Gia Định and Định Tường to France

Phan Thanh Giản signed the treaty with French and Spanish representatives on 5 June 1862, ceding southern provinces to France.

Following preliminary discussions, the treaty was signed on 5 June 1862. The agreement ceded Biên Hòa, Gia Định, and Định Tường to France. This followed the capture of Vĩnh Long and military setbacks that pressured the Huế court to accept peace terms.

Sources

  1. Treaty of Saigon (1862) Wikipedia, revision of 2025-08-05
  2. Cochinchina campaign Wikipedia, revision of 2026-08-22
  3. Cochinchina Wikipedia, revision of 2026-07-12

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.