Language in the Global History of Knowledge**.

The article focuses on study of language from a global perspective raises questions about the distribution of knowledge, and controversies about indigenous American languages, this theme issue puts global tensions in their respective local contexts and vice versa. It mentions cartographer Ishikawa Ryūsen and philological exercise, the interpretation of the world map fits within Klaproth's lifelong project of studying the languages, history, and geography of Asia in interrelation.