See the "Historical Materialism" of Marx and Engels: https://en.m.wikipedia.org/wiki/Historical_materialism#Trajectory_of_historical_development https://en.m.w

See the "Historical Materialism" of Marx and Engels: https://en.m.wikipedia.org/wiki/Historical_materialism#Trajectory_of_historical_development https://en.m.wikipedia.org/wiki/Historical_materialism#Traje...