I love looking for the kernels of truth in things.  Why did older cultures believe in more than one god when newer cultures moved to religions with one god?

More ancient cultures had spiritual people akin to shamans or medicine men.  Shamans people became aware of the collective consciousness.  In that collective, different cultures pool into different “areas” of the Gaia mind (think different areas in the library also known as the Akashic records.)  So they labeled these different areas, with their own unique “personalities” as individuals and gave them names (a very human way of interpreting this psychic information.)  And since they were “greater” than man, they were labeled “gods.”

Then later in human history, greater masters come along… masters with a greater connection to the Force like Buddha, Jesus and Milarepa.  The masters become aware of the greater and greater grids of conscoiusness… the solar grid… the galactic grid… and eventually the universal grid.  One collective of consciousness… one universe/one God… hence monotheism.