After, the unstable and more unprecedented situation across the globe in the shape of Cold War in the era of 1940's there was much to develop the economic sector of the different countries, as there were different factors which were required to be look like the industrial zones were much needed which mainly focused on the products for consumers.
Explanation:
As, the US economy was revived by providing a huge amount of developmental funds for creating the different industries for the development of the economy and enhancing US capabilities to improve its over all situations.
Along with that many different countries like Germany and other European countries focused on development of new and more advanced form of machinery and stuff, as it would generate more revenue for the over all region.