The most important implications that can arise from conducting international business happen in the economic domain. That is why this topic is examining the economic relations between businesses that exist in different countries/regions. Although businesses operate in different circumstances, they have to find common grounds in order to operate. Hence, the entrepreneur must have a wide range of knowledge regarding not only economy, but also socio-cultural relations, psychology and so on. In this topic examined are in details international customers, international agreements, customs and freight-forwarding challenges. International competition is getting fiercer because enterprises from all around the world conduct diversification of their products and services.