I want to know the answer to the following question:
What did an established church, even at the state level, have?
All the background I'm provided with is that "In 1773, Isaac Backus, a prominent Baptist minister in New England, wrote against a state sanctioned religion, saying: "Now who can hear Christ declare, that his kingdom is, not of this world, and yet believe that this blending of church and state together can be pleasing to him?"". Is that enough to answer the question?
Answer: no