French indochina was made up of all of the following except a. vietnam c. laos b. korea d. cambodia

French Indochina was made up of Vietnam (which was split into two parts: Tonkin and Annam), Cambodia and Laos (Laos was added later than the rest, in 1893).

Korea was never part of French Indochina, which also can be explained by the fact that it does not directly share a land border with the rest.