 The just titles to servitude were not rejected by the Church, but rather were tolerated for many reasons.This in no way invalidates the clear and consistent teaching against the unjust slavery that came to prevail in Africa and the Western Hemisphere, first in Central and South America and then in the United States, for approximately four centuries.Vic Biorseth argues that "In all of recorded history, there is no such thing as a matter of faith and morals on which the Holy Roman Catholic Church has ever changed its teaching."