On its face, this would seem reasonable. If this is true we would expect to see free Non-Christian nations, but I cannot think of any off the top of my head. I guess the country that comes closest would be Japan. Even Japan, however, isn't the United States.
The fact of the matter is that areligious revolutions tend to focus on materialism, like the French and Russian Revolution. The scholars of both countries were steeped in the tradition of Enlightenment philosophy, as our founders were, but how much did it help?
Non-Christian religious revolutions and reorganizations generally have unpleasant outcomes, especially for those not with the new "in" crowd. I won't say "Ayatollah you so." (dodges flying trout)
We can agree to disagree, though. Nifty, isn't it?! :o)
Faces usually are reasonable. When you describe nations as being Christian, non-Christian, etc, do you mean the majority of it's population? A nation is not religious, it's the people. This country is made up of many people of many beliefs. When Jefferson was president, was this a Deist country? Did Lincoln make it a non-religious country, Kennedy Catholic, etc? Our Declaration of Independence and our Constitution, and all of our people are what makes this country the way it is, not some stand on differing religious beliefs. To get back to my original statement...I still think humans die to liberate other humans.