Where did the slaves come from that built the vatican?

The construction of the Vatican, particularly St. Peter's Basilica, primarily took place during the Renaissance, a time when the use of slaves was not as common in Europe as in other regions. However, it is known that many of the workers were skilled artisans and laborers, often from local populations or other parts of Europe. Although there were instances of forced labor and exploitation, particularly in earlier centuries, the majority of the workforce for the Vatican's construction consisted of paid laborers rather than enslaved individuals.