This document discusses key concepts in global and international business including international trade, tariffs, non-tariff barriers, subsidies, quotas, and reasons for trade policies. It outlines different types of international trade such as intra-firm, inter-firm, intra-industry, and inter-industry trade. It also defines tariffs, non-tariff barriers like technical barriers and import charges, subsidies in the forms of cash grants and tax breaks, and quotas including tariff rate quotas and voluntary export restraints. Finally, it lists reasons for trade policies around protecting domestic industries, consumers, and national security and benefits of international trade such as increased exports and competition.