The early humans used to communicate using a special kind of clicking language.Evidence for a language called pali were also found.they usually had stone paintings and scluptures on cave walls.
People in the Aztec empire were allowed to rise in a social class once they've proven themselves to the gods that they were worthy of "ascending" a social class. This did not happen that commonly. It often involved people showing athletic or war prowess which was seen as a sign that people were favored by the gods.