The closely linked financial markets have changed the monetary transmission mechanism, and shocks that occur in one country can easily have an impact on other countries. As a transition phase of or perhaps as an alternative to globalisation, considerable emphasis has been placed on closer international co-operation, convergence and integration since the end of World War II.
Many regional economic co-operation arrangements have been formed or are under consideration. The aim of these regional arrangements is to free international trade and financial transactions between a group of countries. But many of them also want to encourage the movement of labour across domestic frontiers and the eventual attainment of political unions.