Asia
The coastal periphery was home to some of the world's earliest known civilizations, each of them developing around fertile river valleys. The civilizations in Mesopotamia, the Indus Valley and the Yellow River shared many similarities. These civilizations may well have exchanged technologies and ideas such as mathematics and the wheel. Other innovations, such as writing, seem to have been developed individually in each area. Cities, states and empires developed in these lowlands.
History of education
Starting in about 3500 B.C., various writing systems developed in ancient civilizations around the world. In Egypt fully developed hieroglyphs were in use at Abydos as early as 3400 B.C. The oldest known alphabet was developed in central Egypt around 2000 B.C. from a hieroglyphic prototype. One hieroglyphic script was used on stone monuments, other cursive scripts were used for writing in ink on papyrus, a flexible, paper-like material, made from the stems of reeds that grow in marshes and beside rivers such as the River Nile.