That's right. But it is not always easy to draw the right lessons from history.
In terms of allowing history to demonstrate what worldview is actually conducive to peace, liberty, and prosperity--not at all difficult if one knows what to look for.
if you only look after your principles,
Sorry, I don't understand your meaning here.
This may be a historical coincidence
Claiming natural causes for the success of America is simply another way of directly or indirectly denying or attempting to mitigate the validity of the Christian worldview; for the predominate worldview in historical America was indeed the Christian worldview, and of course the creation and establishment of any nation does not occur outside of the predominate worldview of those involved in such creation/establishment.
In addition, such appeal to natural causation is effectively an affirmation of the claim that Good fruit can be derived from a corrupt tree. Think about it.
I wonder how many concurrent or consecutive "coincidences" does it take to convince deniers that the creation and establishment of America is a special work of God, that consequently also works as one of the greatest apologetics for the Christian worldview.
So, so sad.
This had to do with a liberal immigration policy. There were or are countries that do not want immigrants. And the immigration you praise has another "side of the medal": a genocide on the natives.
Are you claiming that a liberal immigration policy was the only or primary factor?
America's sins do not represent the totality of its history. Such sins do not mitigate nor negate America's historic success, its demonstration of the validity of the Christian worldview, the glory it has brought to God, nor its extra-ordinary founding and establishment; no more than the reality of King David's sins negate his success or the glorification of the works of God resulting from God Almighty having guided and worked in and through his life.