This methodology is being increasingly adapted, as it delivers greater systemic productivity, being a more inclusive framework that provides greater regional integration. In the US, the seven county Twin Cities (MN) regional system and Portland (OR) Metro are both the most integrated US examples; but, also those often cited in the US for what they have achieved. These US examples — with their multi-county framework — are similar to what is in place in France after regional unit introduction (making France have a three-tier systemic framework also in the Commune (municipal/lowest tier local unit), Department (county), Regional unit context). Multi-county frameworks are suitable for a very suburbanised system like in the US. After France and Britain, the Indian colony of Britain was the third region to see this methodology implemented.