Attention and logistics. The cost of getting things where they need to go, the administration of an empire, frequently dwarves by orders of magnitude the cost of the materials being transported to and fro. The problem is not solved by localisation given the increased exposure to volatility that brings.
Attention and logistics. The cost of getting things where they need to go, the administration of an empire, frequently dwarves by orders of magnitude the cost of the materials being transported to and fro. The problem is not solved by localisation given the increased exposure to volatility that brings.