The establishment clause came into realization that the state and religion cannot be totally separated. According to the Supreme Court, there is a 3-part test in determining if the celebration complies with the Clause, (1) the activity must be for non-secular purposes. (2) religion must not be advanced nor inhibited as a primary effect of the activity. (3) the activity must not result in too must entanglement with the religion.
Mixed economy/modified private enterprise. Free enterprise system with some government involvement;same as modified private enterprise economy. Voluntary exchange