Catalan Atlas in the context of "Pax Mongolica"

The Mediterranean Lingua Franca, or Sabir, was a contact language, or languages, that were used as a lingua franca in the Mediterranean basin from the 11th to the 19th centuries. April McMahon describes Sabir as a "fifteenth century proto-pidgin" and "a relic of the original Lingua Franca, a medieval language used by Mediterranean traders and by the Crusaders." Operstein and McMahon categorize Sabir and "Lingua Franca" as separate but related languages.

Cathay (/kæˈθeɪ/ ka-THAY) is a historical name for China that was used in Europe. During the early modern period, the term Cathay initially evolved as a term referring to what is now Northern China, completely separate and distinct from China, which was a reference to southern China. As knowledge of East Asia increased, Cathay came to be seen as the same polity as China as a whole. The term Cathay became a poetic name for China.

The name Cathay originates from the term Khitan (Chinese: 契丹; pinyin: Qìdān), a nomadic people who ruled the Liao dynasty in northern China from 916 to 1125, and who later migrated west after they were overthrown by the Jin dynasty to form the Qara Khitai (Western Liao dynasty) for another century thereafter. Originally, this name was the name applied by Central and Western Asians and Europeans to northern China; the name was also used in Marco Polo's book on his travels in Yuan dynasty China (he referred to southern China as Mangi). Odoric of Pordenone (d. 1331) also writes about Cathay and the Khan in his travelbooks from his journey before 1331, perhaps 1321–1330.

Almaliq (Uyghur: ئالمالىق; Chinese: 阿力麻里; pinyin: Ālìmálǐ), also spelled Almalik, Almalig, was a medieval city in the Ili basin in present-day Huocheng County, Xinjiang, China along Kazakhstan border. A modern town named Alimali (阿力玛里) in Khorgas, adjacent to Huocheng, has no historical connections with the medieval town.

Majorcan cartographic school is the term coined by historians to refer to the collection of predominantly Jewish cartographers, cosmographers and navigational instrument-makers and some Christian associates that flourished in Mallorca (Majorca) in the 13th, 14th and 15th centuries until the expulsion of the Jews. The label is usually inclusive of those who worked in Catalonia. The Majorcan school is frequently contrasted with the contemporary Italian cartography school.

Cresques Abraham (Catalan pronunciation: [ˈkɾeskəs əβɾəˈam], 1325–1387) was a 14th-century Jewish cartographer from Palma, Majorca, then part of the Crown of Aragon. In collaboration with his son, Jehuda Cresques, Cresques is credited with the authorship of the celebrated Catalan Atlas of 1375.