Why might some civilizations not have been part of the neolithic revolution?

Some did not have animals that could be domesticated around them.

The Neolithic Revolution was critical because it signified the transition to agriculture. It is believed that the civilization was driven largely by environmental changes--a gradual warming that allowed people to begin cultivating.

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks