Crimes against humanity refer to specific crimes committed in the context of a large-scale attack targeting civilians, regardless of their nationality. These crimes include murder, torture, sexual violence, enslavement, persecution, enforced disappearance, etc.
I believe the answer is: A just-noticeable difference
In painting, A just-noticeable difference refers to the amount of things that needed to be change for a difference to be noticeable.
The threshold usually depended on the type of audience that being aimed toward, (for common audience, the threshold of differences would be relatively higher compared to expert audience)<span />
USA refused , because the Senate don't ratify this document
Justinian code was so important because because it became the substructure for licit systems of most modern European countries.