Cathay "Pratica della mercatura", a guide about trade in China, a country he called "Cathay", noting the size of Khanbaliq (modern Beijing) and how merchants could exchange silver for Chinese paper money that could be used to buy luxury items such as silk. Words related to Khitay are still used in many Turkic and Slavic languages to refer to China. However, its use by Turkic speakers within China, such as the Uyghurs, is considered pejorative by the Chinese authority who had tried to ban it. As European and Arab travelers started reaching the Mongol Empire, they described the Mongol-controlled Northern China
Modern language of eight. International auxiliary languages are by definition not associated with a particular country or geographic region. Esperanto is probably the best-known and most widespread. Interlingua, a much less popular, but still growing auxiliary language, is likewise spoken mainly in Northern and Eastern Europe and in South America, with substantial numbers of speakers in Central Europe, Ukraine, and Russia. Other auxiliary languages include Occidental and Latino Sine Flexione. Modern language A modern language is any human language that is currently in use. The term is used in language education to distinguish between languages which are used for day-to-day communication (such