Whatever may be the explanation, whether it was due to the severity of the climate or to the savage character of the inhabitants, the Christian missions in Africa were not productive of much fruit. St. Vincent de Paul sent some of his community to work in the district around Tunis and in the island of Madagascar. Missionaries from Portugal made various attempts to found Christian communities along the whole western coast of Africa. In the Congo the results at first were decidedly promising. Here the work was begun by the Dominicans, who were assisted at a later period by the Capuchins, the Augustinians, and the Jesuits. Many of the inhabitants were won over to the faith, but as years passed, and as the supply of missionaries failed, much of what had been accomplished was undone, though the Capuchins still continued their efforts. In Angola the Jesuits led the way, in Upper and Lower Guinea the Jesuits and the Carmelites, in Morocco and in Egypt the Franciscans, while various religious bodies undertook the work of evangelising the Portuguese colonies in Eastern Africa. By far the greatest triumph of the Church during this age of missionary effort was that which was achieved by the conversion of the native races in the territories occupied by Spain and Portugal in the western continent. The hope of extending the boundaries of the Church was one of the motives that induced Columbus and his supporters to undertake their voyage of discovery, as it was also one of the motives urging the rulers of Spain to increase the sphere of their jurisdiction. Hence from the very beginning great care was taken to provide for the conversion of all the natives. Priests were despatched from Spain with all the expeditions. Dominicans, Franciscans, Carmelites, Augustinians, Fathers of the Order of Our Lady of Mercy, and after the establishment of the Society of Jesus, Jesuits vied with each other in their eagerness to risk their lives in the work. Generous provision was made by the rulers of Spain for the support of the clergy and the maintenance of religion. Churches were erected, episcopal and archiepiscopal Sees were founded and endowed, colleges and monasteries were established by the various religious orders, and in the course of less than a century the Church had gained in the new world almost as much as she had lost in the old.