Perhaps the most readily measurable aspect of globalization is the increasing exchange of products and services across national boundaries. Our interdependence is visible when we consider how manufactured goods like cars or computers are assembled using components produced around the world. Controversial trade issues include: agricultural subsidies and government-imposed tariffs that reduce the amount of exchange between developing and developed countries; the rules governing proportions of imported films to locally-produced films that can be shown at movie theaters; and the influence wielded by different countries at multilateral forums like the World Trade Organization. The following articles have been assembled to shed light on these and other related issues.