Over many centuries, human societies across the globe have established progressively closer contacts. Recently, the pace of global integration has dramatically increased. Unprecedented changes in communications, transportation, and computer technology have given the process new impetus and made the world more interdependent than ever. Multinational corporations manufacture products in many countries and sell to consumers around the world. Money, technology and raw materials move ever more swiftly across national borders. Along with products and finances, ideas and cultures circulate more freely. As a result, laws, economies, and social movements are forming at the international level.