fro-Eurasia,[3] Afroeurasia,[4] or Eurafrasia,[5] known in antiquity as the Ecumene and most commonly known since the Age of Discovery as the Old World,[6] is the largest landmass on Earth, primarily in the Northern and Eastern Hemispheres. The term is a portmanteau of its constituent parts: Africa and Eurasia, the latter divided into Europe and Asia.[5] Afro-Eurasia encompasses 84,980,532 square kilometers (32,811,166 sq mi) and has a population of approximately 6 billion people which is roughly 85% of the world population.[7] In geopolitical contexts, it is sometimes known as the World Island, a term coined by H.J. Mackinder.[8][9]