@Elaine1234,
"our civilization is a product of a group of colonists wanting to live free in a land of great opportunity, really the last untapped frontier."
I was referring to Western Civilization.
"But the colonization was the product of a need of religious freedom by Quakers, Puritans, etc. That's why we have separation of church and state."
That's actually a small part of the story. Many more came to America without the slightest religious incentive.