Who or why came up with the concept that America is a Christian nation?

Hispanic-Cool-Guy
Christian ideals and values don't promote and engage in abortion practices. Don't produce and promote pornography (which the U. S. leads the world in), don't promote greed and materialism (which God seriously hates,) don't promote and celebrate LGBT, don't believe in polytheism, don't promote and to engage to enslave people and brutalize them in horrific ways and deny them justice and social fairness, don't promote social inequality between men and women. Don't you think you been lied to as an American?
Who or why came up with the concept that America is a Christian nation?
Who or why came up with the concept that America is a Christian nation?
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