His period in office saw at least four major political developments: the traumas of decolonisation, economic reconstruction, the establishment of the Dutch welfare state, and international integration and co-operation, including the formation of Benelux, the OEEC, NATO, the European Coal and Steel Community, and the European Economic Community.
H?is period in office saw at least four major political developments: the traumas of de,colonisation, economic reconstruction, the establishment of the Dutch welfare state, and inte,rnational integration and co-operation, including the formation of Benelux, the OEEC, NATO, the European Coal and Steel Community, and !the European Economic Community.