What religious group dominated the middle countries?

The religious group that dominated the middle countries, particularly during the early modern period, was primarily Christianity, specifically Protestantism and Catholicism, depending on the region. The Protestant Reformation, which began in the early 16th century, led to significant religious shifts in countries like Germany and the Netherlands, while Catholicism remained influential in areas such as France and southern Europe. This religious landscape shaped not only spiritual life but also political and cultural dynamics in these regions.