How did french imperialism in vietnam affext southeast asia

The French Protectorate in Indochina. To ensure their presence in Southeast Asia, the French used the pretext of anti-Catholic persecution in Vietnam to take advantage of the internal weaknesses of Cambodia and Laos, establishing a colony with the predominant goal of economic exploitation.

Explanation:

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French Indochina was formed on 17 October 1887 from Annam, Tonkin, Cochinchina(which together form modern Vietnam) and the Kingdom of Cambodia; Laos was added after the Franco-Siamese War in 1893. The federation lasted until 21 July 1954.

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