I believe the answer is the Neolithic Age.
As the early 1900's was still a religious period, many people had discontent with that theory because they thought it damaged the origins of the bible, and public morality.
Security in a free-market system is handled on two different levels: at the state level (which is public) and at the private level, in which private security firms are hired.
<span>The pre-operational stage is characterized by egocentric thought. This is the second stage and lasts from about age two until age seven. The child is learning to speak, but cannot yet think abstractly and use logic. The child in this stage focuses primarily on themselves and has a hard time taking the perspective of others. The child assumes that others view the world in the same way that they do.</span>
