regionalizationnoun [ U ]
UK also regionalisation uk/ˌriːdʒənəlaɪˈzeɪʃən/us/ˌriːdʒənələˈzeɪʃən/ECONOMICS, POLITICS the way that an area of the world containing several countries becomes more economically or politically important than the particular countries within that area:
Economists have noted the increasing regionalization of different parts of the world into trade blocs.