This document discusses several key concepts in international business including: 1) Internationalization refers to the increasing importance of international trade and relations between nations, while globalization is the effective erasure of national boundaries for economic purposes. 2) Several theoretical models are presented to explain international business and trade, including mercantilist theory, absolute advantage, comparative advantage, Hecksher-Ohlin theory of factor endowments, product life-cycle theory, new trade theory of economies of scale, and Porter's national competitive advantage theory. 3) Country-specific advantages and organization-specific advantages influence a firm's international expansion strategies, with considerations for retaining ownership and control versus integrating or sharing activities.