Greater Central Asia (GCA) is a variously defined region encompassing the area in and around Central Asia, by one definition including Pakistan, Iran, Turkey, Xinjiang (in China), and Afghanistan,[1] and by a more expansive definition, excluding Turkey but including Mongolia and parts of India and Russia.[2] The region was historically interconnected religiously, economically, and otherwise,[3] being important as part of the Silk Road trading network until the 15th century;[4] the competition between Soviet, British, and Chinese spheres of influence split the region apart in the 20th century.[5] In the 21st century, it has been contested by a number of major powers, such as America, China and Russia.[6][7]
The region is defined to a significant extent by its many tribal/clan alliances and histories.[8]