The way it seems,the more developed a country is,at least in terms of infrastructure ,peoples' support and living condition,the more peaceful a country is.
The European countries are in the top of the list.
Come to think of it,pollution in the European rivers have reduced post-World war II,in spite of the industrialization.
We must look in depth how the developed European countries have gone about it.We dont want development like that of UAE,where the development is based on limitless spending and thereby wastage,fulled by the natural resources.We want development based of re-use of components,reducing wastage and with minimal damage to the nature.