Which of William Penn's three purposes for his "holy experiment" (religious toleration, a liberal government, and personal profit) would prove to

be the most difficult for him to fulfill?

The "Holy Experiment" was an attempt by the Religious Society of Friends, also known as Quakers, to establish a community for themselves and other persecuted religious minorities in what would become the modern state of Pennsylvania. They hoped it would show to the world how well they could function on their own without any persecution or dissension.

The Experiment ultimately failed after roughly eighty years, due to Penn's death and conflicts between Quakers and non-Quakers within the colony over the foundation of a Pennsylvania-backed militia, which defied Quaker beliefs.