 Many businesses operate across national boundaries. These are typically called “multinational” or “transnational” firms (MNCs or TNCs). Operating internationally heightens the salience of a number of the ethical issues discussed above, such as CSR, but it also raises new issues, such as relativism and divestment. Two issues often discussed in connection with international business are not treated in this section. One is wages and working conditions in sweatshops. This literature is briefly discussed in  section 6.2.  The second issue is corruption, which is not discussed in this entry, for space reasons. But see the entry on  corruption.