Today, one can't talk merely of technical milieu but of technico-scientific milieu. The use of nature and its resulting transformations are increasingly dependent upon knowledge ; and space itself is loaded with science and technology. Along with universalization and unification of techniques, labour and capital, space itself becomes global and each fraction of it is internationalized. Peripheral regions are incorporated ; subspaces attain economical specialization ; new regional complementarities appear; circulation and information are major data. Migrations get more massive and urbanization gets more concentrated. National territory is unified through the development of transport and communications; but still there is desarticulation at the decision level. The State, financial sector and big firms assume most of the new regulations but the role of « invisible classes » in structuring society and space is increasing.