"Your fame went out among the nations because of your beauty, for it was perfect through My splendor which I had bestowed on you", says the Lord God. (Ezekiel 16:14)
God is speaking to the nation of Israel. Israel's fame and "beauty" among nations came about because of God's splendor upon them.
I believe America has become a great country because it was built on Christian principles by people who honored God and sought to worship Him freely. The Lord blessed this country because of the obedience of many who came before us.
I wonder what happens if our nation turns away (as it is already doing)...