Africa-Eurasia (also called Afro-Eurasia, Eurafrasia, Afrasia) is a supercontinent and the world's biggest landmass. Around 85% (approximately 5.5 billion) of the World population lives there. It is split into two continents by the Suez Canal into the continents of Africa and Eurasia, the latter of which has been historically further subdivided into Europe and Asia. Historians of the cultural materialism school may subdivide it into Eurasia-Northern Africa and Sub-Saharan Africa, based on different agricultural systems.
The Old World includes Africa-Eurasia and its surrounding islands.
In geological terms, Africa-Eurasia (or Eurafrasia) will be a supercontinent when Africa collides with Europe. This is estimated to happen in 600,000 years, when the southern tip of Spain reaches Africa. When this happens, the Mediterranean Sea will be isolated from the Atlantic Ocean. Africa is expected to collide with Europe completely in 50 million years, closing the Mediterranean, and creating new, future mountain ranges (with an addition to the Alps), which might be called the Mediterranean Mountains.