The coastal periphery was the home to some of the world's earliest known civilizations, with each of the three regions developing early civilizations around fertile river valleys.
These valleys were fertile because the soil there was rich and could bear many root crops.
These include the trade of the Silk Road, which spread cultures, languages, religion, and disease throughout Afro-Eurasian trade.
Another major advancement was the innovation of gunpowder in medieval China, which led to advanced warfare through the use of guns.
The Indus Valley Civilization (IVC) was a Bronze Age civilization (3300–1300 BCE; mature period 2600–1900 BCE) which was centered mostly in the western part of the Indian Subcontinent; it is considered that an early form of Hinduism was performed during this civilization.