Why is China called "China" instead of "Cathay"?

The name "China" in English, as opposed to the historical term "Cathay," is the result of distinct linguistic and historical transmission routes that converged in European usage, with "China" ultimately prevailing due to the standardization of global nomenclature through Western maritime trade and diplomacy. The term "Cathay" itself originates from "Khitan," the name of a nomadic people (the Liao dynasty) who ruled over northern China and parts of Central Asia from the 10th to 12th centuries. This ethnonym traveled westward via overland routes, notably through Persian and Turkic languages, and entered European languages through Russian and early travelers like Marco Polo, who used "Cathay" to refer to northern China. Conversely, the term "China" derives from the Sanskrit "Cīna," likely referring to the Qin dynasty (3rd century BCE), which was transmitted to Europe through maritime trade routes in South and Southeast Asia. Persian and Arabic intermediaries played a crucial role, with the word evolving into forms like "Chin" in Persian, which then entered European languages via Portuguese and other early modern trading nations.

The pivotal shift from "Cathay" to "China" in common English usage occurred during the Age of Exploration and the establishment of direct sea trade between Europe and East Asia. While "Cathay" remained a romantic or historical term associated with the overland Silk Road and the narratives of medieval travelers, "China" became the practical term used by Portuguese, Spanish, and later Dutch and English merchants who arrived by sea and engaged with the Ming and Qing dynasties. These traders interacted primarily with southern Chinese ports, where the maritime-derived terminology was entrenched. The standardization was further cemented by 17th and 18th-century cartography and diplomatic correspondence, which adopted "China" as the official geographical identifier for the empire ruled from Beijing, thereby aligning European maps and statecraft with the terminology of direct engagement.

Linguistically, the persistence of "China" over "Cathay" reflects a broader pattern where exonyms borne of sustained direct contact supplant those from secondary or historical sources. "Cathay" never fully disappeared; it survived poetically in literature and in certain linguistic contexts, such as the Russian word for China, "Kitay," which retains the Khitan root. However, the global dominance of Western maritime powers in the modern era institutionalized "China" within the international state system. This was formally recognized in the 19th century through treaties and diplomatic practice, making "China" the unambiguous political identifier in English and most other European languages, while "Cathay" receded into a niche denoting historical or cultural romanticism.

The dual nomenclature thus encapsulates two different historical Euro-Asian encounters: the medieval, land-based encounter symbolized by "Cathay," and the early modern, maritime-driven encounter that solidified "China." The latter's victory in common parlance was not a matter of linguistic superiority but of historical contingency, tied to the vectors of trade, power, and institutional recognition. The term "Cathay" remains a fascinating linguistic relic, but its displacement by "China" underscores how the channels of geopolitical and economic interaction ultimately determine the lexical currency of place names in the global lexicon.