The document discusses intercultural communication, an interdisciplinary field that examines how individuals understand each other across various cultural boundaries. The field emerged from the practical needs of post-World War II diplomacy and business in the U.S., and has evolved to address the complexities of communication among diverse groups, incorporating insights from linguistics, psychology, and other social sciences. The current trend emphasizes the socio-political dimensions of language and the implications for teaching English in a globalized world.