 In 1908 it was enlarged by taking as its boundaries on the east the left bank of the Lualaba River, and on the west the Prefecture Apostolic of Kwango, which was in the charge of the Jesuits.The local languages were those of the Bena Lulua, the Baluba (Tshiluba language), Bena Kanioka, the Batetela, the Bakuba, the Bakete, and the Balunda.Just one religious order of men was engaged in evangelization there, the Congregation of the Immaculate Heart of Mary of Scheut (Brussels), and a single religious order of women, the Sisters of Charity of Ghent.