International business involves cross-border transactions undertaken to satisfy objectives of individuals, companies, and organizations. It evolved from 19th century concepts of integrated economies and trade to modern globalization driven by advances in transportation, communication, and reduced trade barriers. Key developments included the establishment of institutions like the IMF, World Bank, and WTO to facilitate international cooperation and liberalized trade. The scope of international business has expanded over time from international trade to marketing and multi-national operations as companies establish foreign subsidiaries and conduct business across multiple countries.