Competition law enforcement is no longer limited to a few countries but has become widespread across the globe. Over 100 countries have enacted competition laws and established competition law enforcement agencies. Since an ever growing number of companies are operating in or selling into other countries, they are subject to the competition laws of multiple jurisdictions. For example, companies that do business internationally can be faced with merger reviews in several different countries if they try to merge with, or acquire, another company. Their business practices and conduct can also be subject to simultaneous civil or criminal investigations in a number of countries. As a result, it has become increasingly important for antitrust lawyers and government enforcers in the United States and other countries to become familiar with the competition laws and enforcement practices of various countries throughout the world.