Hiya!
The correct choice would be "Polite"
Civilized means polite, and well-mannered in the English dictionary.
Good-luck! :D
Answer:
His new relationship with Germany is enshrined in a new non-aggression treaty.
Explanation:
The first thing that came to my mind when i read that phrase was that whatever this "script" is, it must be a pretty awesome piece of work.