 Pope Pius XII wanted to move quickly towards a proper hierarchy (with bishops instead of vicariates and apostolic prefectures).Lefebvre was responsible for selecting these new bishops, increasing the number of priests and religious sisters, as well as the number of churches in the various dioceses.On 14 September 1955, the Apostolic Vicariate of Dakar became an archdiocese, and Lefebvre thus became the first Metropolitan Archbishop of Dakar.