Which two provinces merged to form Vinh Tra?

The formation and development of Tra Vinh province can be divided into two stages.

Phase 1 from 1732 to 1900.

The land and name "Tra Vang", the predecessor of Tra Vinh province, existed before Lord Nguyen established Chau Dinh Vien and built Dinh Long Ho in 1732. Thus, at that time, Tra Vinh land belonged to Chau Dinh Vien.

In 1802, after ascending the throne, King Gia Long immediately began to rearrange and redefine the boundaries of administrative units nationwide. From then on, Gia Dinh Prefecture was renamed Gia Dinh Town. Gia Dinh Town's territory was divided into 4 dinh and 1 sub-town, the land of Tra Vinh at this time belonged to Vinh Tran Palace.

In 1803, King Gia Long ordered the mapping of the palaces belonging to Gia Dinh Town and changed Vinh Tran Palace to Hoang Tran Palace. The land of Tra Vinh at this time belonged to Hoang Tran Palace.

In 1808, Gia Long changed Gia Dinh Town to Gia Dinh Citadel, Vinh Tran Palace was changed to Vinh Thanh Town. At that time, Tra Vinh land belonged to Vinh Thanh Town.

In 1825, Tra Vinh land was established by King Minh Mang as Lac Hoa Palace under Gia Dinh Citadel, including two districts of Tra Vinh and Tuan My.

In 1832, Vinh Thanh Town was renamed Vinh Long Town. Later, King Minh Mang changed the towns into provinces. The Southern region was divided into six provinces, called "Nam Ky Luc Tinh" including: Bien Hoa, Gia Dinh, Dinh Tuong, Vinh Long, An Giang , Ha Tien. At this time, Tra Vinh was a district of Lac Hoa Prefecture, Vinh Long province.

In 1876, the Governor of Cochinchina issued a decree dividing the entire Cochinchina into four major administrative regions. Based on that division, the major administrative region of Vinh Long consisted of four sub-regions: Vinh Long, Tra Vinh, Ben Tre , and Sa Dec. Tra Vinh sub-region was the predecessor of Tra Vinh province later.

On December 20, 1899, Governor-General of Indochina Doumer signed a decree to change the name of the sub-region to a province. From here, the old six provinces of Cochinchina were re-divided into 10 new provinces, the old Vinh Long province was split into 3 new provinces: Vinh Long, Ben Tre, Tra Vinh. This decree was officially implemented from January 1, 1900. From here, the name Tra Vinh province was officially used in French documents as Province de Tra Vinh.