The document discusses four approaches to international business: ethnocentric, polycentric, regiocentric, and geocentric. The ethnocentric approach relies on exporting domestic products overseas without adaptation. The polycentric approach treats each foreign market uniquely and establishes local subsidiaries. The regiocentric approach views regions as unified markets and implements strategies at a regional level. Finally, the geocentric approach views the entire world as a single market and uses standardized global marketing strategies.