Why should business managers be familiar with laws that regulate business practices between nations? Multiple Choice 21 Businesses may meet foreigners and should be familiar with their customs to foster positive business relationships Businesses are required to know the laws and to become WTO members to have Internet websites. NAFTA requires registered businesses to understand and comply with international law GATT mandates that U.S. organizations know the laws in the United States and in 150 other member countries in order to incorporate. Advances in trade and technology have made trade with other countries easy, but companies must comply with local laws