EXPANSION of internal trade and a wider market for its products are generally considered necessary conditions for the economic strengthening of Western Europe. Obviously, creation of a wider market presupposes at least some liberalization of trade. Liberalization of intra-Western European trade might be part of some broader scheme, such as a world-wide liberalization of trade, or the establishment of a huge block of interlocking preferential areas, as advocated by the Strasbourg Plan; or it might be restricted to Western Europe alone. At all events, it is clear that the economic consequences of liberalization will depend on the areas to be liberalized and on the character of the agreements that pertain to the mutual removal of trade restrictions.