Its the basis for civilization.
Is it? Who told you that?
History.
Specifically?
The recorded part, tells the tale of how civilizations come and go.
That's hardly specific.
History's main value is in its breadth. One or two factoids do not paint a picture. But since you are after a gotcha, ask yourself what happened to Rome when it abandoned morality.
What "morality" do you think the Romans abandoned, and why do you suppose the end of their Empire was due to a purported "immorality"?
Is that relevant?
You can read all about it in any number of books.
Should it be? It would be to a Christian, and despite the decline, this country is still considered to be Christian.
https://www.history.com/news/8-reasons-why-rome-fellPerhaps. Since we're discussing it here, and you made the statement, could you please provide some detail?
That lists 8 possible reasons why Rome's empire ended. Which one are you proposing, and how would it indicate that there is a necessity for morality?