Here’s a good description of what happens when the left side of the brain becomes the dominant force in a society. https://caitlinjohnstone.com/2021/03/15/on-nonduality-politics-and-freedom/
The Division of the Brain – Elephant in the Room for Neuroscience
Dr. McGilchrist describes current thinking on left/right brain hemisphere laterality. Dr. McGilchrist suggests to us that historically, western culture achieved a balanced hemisphere state during several periods; the Augustan period in the 6th century B.C., and in Europe during the 15th and 16 century.