The processes of secularization that followed in the wake of the Reformation continue to work themselves out in complicated ways, not only in Europe but also in North America. To make a very long and complex story short, the success of the Reformation combined with the persistence and renewal of Roman Catholicism in the 16th and 17th centuries made Christianity into an enduring, disruptive problem in new ways, layered on top of problems that already affected late medieval Christianity.