Wrigley 3

in organic economies negative feedback stops growth--running out of land to feed a growing population
in the industrial revolution there was instead positive feedback--for example urbanization encouraged agricultural productivity

Cities and towns were growing faster in England than in the rest of Europe

Does increasing food production cause urban grown or does the causation go the other way?
Key to this is improved transportation:
Barton Aqueduct of the Bridgewater canal

The Consumer Revolution--what changes is a new interest in buying more products

Increased agricultural productivity