The uniqueness of the United States in human history is the United States is the first global power in human history which emerged far away from Africa or Asia, which is the main land of human history.
To have a liberal temperament is a kind of psychological boon, To be able to understand that someone you disagree with is not just a terrible creature but somebody with whom you disagree.
I grew up in a family where the women were just nuts. They didn't stand around in cardigans making polite conversation while they chopped tomatoes.