Aid to developing nations takes many forms. Some aid is in the form of direct monetary assistance—grants and loans aimed at stimulating developing nations’ economies. For example, the United States provided roughly $10 billion in monetary aid to developing nations in 2000. A second, related form of aid is debt relief: the cancellation or restructuring (for example, lowering the interest rates) of previous loans. Government and charitable organizations also provide humanitarian aid to developing nations in times of crisis, sending shipments of food, clothing, and medical supplies, as well as groups of humanitarian aid workers. A fourth type of aid is aimed at promoting development in poor nations through primarily noneconomic means. For example, nations such as the United States may provide training to teachers or doctors; help build and run educational, medical, and sanitation...