Final answer:
Pennsylvania placed a high value on religious freedom.
Step-by-step explanation:
The statement that best describes an effect of William Penn's actions on colonial America is that Pennsylvania placed a high value on religious freedom. Unlike other colonies in British America, Pennsylvania under Penn's leadership allowed a degree of religious tolerance found nowhere else. Penn established a colony that welcomed all persecuted people and made religious toleration a priority, attracting Quakers as well as people of other faiths.