What is Africa-Eurasia?
[[File:LocationAfricaEurasia.png|300px|right|Map showing Africa-Eurasia (in green)]] '''Africa-Eurasia''' (also called '''Afro-Eurasia''', '''Eurafrasia''',<ref>{{Cite book|url=https://books.google.com/books?id=DJgnebGbAB8C&pg=PA215|title=Encyclopedia of World Geography|last=McColl|first=R. W.|date=2014-05-14|publisher=Infobase Publishing|isbn=978-0-8160-7229-3|language=en}}</ref> '''Afrasia''' and the [[Old World]]) is the [[world]]'s biggest [[landmass]]. Around 85% (approximately 5.5 billion) of the [[world population]] lives there. It is split between the two [[continent]]s of [[Africa]] and [[Eurasia]], the latter of which has been historically further subdivided into [[Asia]] and [[Europe]]. In [[geopolitics]], the mainland of Africa-Eurasia (excluding islands such as the [[British Isles]], [[Japan]], [[Madagascar]], and the [[Malay Archipelago]]) has been referred to as '''World Island'''.<ref>{{Cite book|url=https://books.google.com/books?id=yrZFAQAAMAAJ|title=The Geographical Pivot of History|last=Mackinder|first=Halford John|date=1904|publisher=Royal geographical Society|language=en}}</ref> The [[Old World]] includes Africa-Eurasia and its surrounding islands: * [[Africa]] ** [[North Africa|Northern Africa]] ** [[Sub-Saharan Africa]] *** [[East Africa|Eastern Africa]] *** [[Central Africa|Middle Africa]] *** [[Southern Africa]] *** [[West Africa|Western Africa]] * [[Eurasia]] ** [[Asia]] *** [[Central Asia]] *** [[East Asia|Eastern Asia]] *** [[Siberia|Northern Asia]] *** [[Southeast Asia|South-eastern Asia]] *** [[South Asia|Southern Asia]] *** [[Western Asia]] ** [[Europe]] *** [[Eastern Europe]] *** [[Northern Europe]] *** [[Southern Europe]] *** [[Western Europe]] In [[geology|geological]] terms, Africa-Eurasia (or Eurafrasia) may be a [[supercontinent]] if [[Africa]] collides with [[Europe]]. One estimate suggests it will happen in 600,000 [[year]]s, when the southern tip of [[Spain]] reaches Africa. If this happens, the [[Mediterranean Sea]] will be isolated from the [[Atlantic Ocean]]. Afr