French-Spanish forces attack Da Nang

After military defeats, the Nguyễn court signed a treaty ceding three southern provinces and Saigon to France and opening ports to French trade. It formalized a major loss of Vietnamese sovereignty.

The Harmand Treaty placed the Nguyễn court under French control. The court later signed a revised protectorate treaty in 1884. French rule expanded through coercion while Vietnamese anti-colonial...

After French forces attacked the Huế court, Hàm Nghi and regent Tôn Thất Thuyết left the capital and issued an appeal calling officials and people to support the monarch and resist French conquest....

Following the Cần Vương appeal, Trần Văn Dư issued a proclamation in Quảng Nam urging local residents to resist French power. Nguyễn Duy Hiệu later led the organization. Local networks and...

France established the Indochinese Union, combining Cochinchina, Annam, Tonkin and Cambodia; Laos joined in 1893. The colonial federation organized territory and labor for imperial rule, despite...