[annalex]

A civilization is something that permits cultures to ineroperate, like all those cross-cultural Californians or cross-cultural militant Muslim.

[Brian Allen]

A civilization is something that permits cultures to ineroperate .....

Semantics?

Or:

A Civilization is defined by the WRITTEN Body of Law that ensures its multi-generational survival!

Western [IE Human] Civilization's knife edge is thus that epitomized in the only Constitutional Republic ever Founded and standing on the Principle of Individual Liberty -- The United States of America!