Fill in the blank
(blank) can be explained by using either the cyclical, evolutionary, equilibrium, or conflict theory.

Basically create a schedule on what you need to study and stick with it

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.