- Abortive and surviving.
- Some as “arrested” because of their overspecialized response to a difficult environment; left them unable either to expand into different regions or to cope with environmental change.
-Some as; Western Christendom, Orthodox Christendom, the Russian offshoot of Orthodox -Christendom, Islamic culture, Hindu culture, Chinese culture, and the Japanese offshoot of -Chinese culture - (named after religion).
-And the most important feature as; manner in which it has responded to the environment.