Final answer:
The Presbyterian Church government is a form of church polity with a representative assembly of elders governing at local, regional, and national levels while ensuring no government mandate over religious instruction in line with the U.S. Constitution.
Step-by-step explanation:
The Church government, Presbyterian, refers to a form of church polity, which is a method of governance of the church characterized by a representative assembly of elders. Various local churches are governed by a body of elders known as a session or consistory, regional churches are governed by a synod, and at the national level, there is a general assembly. This structure emphasizes a system of governance by elders or presbyters, and it stands in contrast with an episcopal system (governance by bishops) and a congregational system (governance by the congregation itself).
It's important to note that, in the United States, the Constitution ensures a separation between church and state. This means that religious groups, including Presbyterian churches, operate independently of government mandates or oversight in the realm of religious instruction. Even with the presence of many denominations, including Presbyterianism, the U.S. does not have a state-sponsored religious organization, or ecclesia, and thus supports the religious freedom for various belief systems to coexist.