The Prefecture Apostolic of the Sahara and the Sudan became a Vicariate Apostolic on 6 March 1891, and in 1901 received new boundaries by which the Prefecture Apostolic of Ghardaïa was separated from it.
The Prefecture Apostolic of the Sahara and the Sudan was transformed into a Vicariate Apostolic on March 6, 1891, and in 1901, its boundaries were adjusted to separate it from the Prefecture Apostolic of Ghardaïa.