The relationship between U.S. corporations and relief and development activities abroad is difficult to document, and unpredictable. Yet for some companies in some countries the involvement of U.S. profit-making corporations in nonprofit service programs is substantial and of considerable social and economic significance. There are also signs that these philanthropy activities are being enlarged and extended. More crucially, the normal business activities of U.S. firms are themselves of enormous importance for the development endeavors of many countries.