Encourage a birth and death process for towns within the region, which gradually has these effects:
1. The population is evenly distributed in terms of different sizes - for example, one town with 1,000,000 people, 10 towns with 100,000 people each, 100 towns with 10,000 people each, and 1,000 towns with 100 people each.
2. These towns are distributed in space in such a way that within each size category the towns are homogeneously distributed all across the region.
This process can be implemented by regional zoning policies, land grants, and incentives which encourage industries to locate according to the dictates of the distribution.
towns of 1,000,000 - 250 miles apart
towns of 100,000 - 80 miles apart
towns of 10,000 - 25 miles apart
towns of 1,000 - 8 miles apart