what is this period characterized by?
Copper, stone, bronze tools
Chalcolithic
 copper
india is an international highway of trade and commerce explain with reason It allowed commercial goods to cross borders with relaxed restrictions using innovative transportation of modern times such as pipeline transport, rail routes, automobiles, cargo airlines etc. when did the very first long distance routes for trade emerge? During the Chalcolithic Period
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Chalcolithic [SEP] Introduction
The Chalcolithic (), a name derived from the "khalkós", "copper" and from "líthos", "stone" or Copper Age, also known as the Eneolithic or Aeneolithic (from Latin "aeneus" "of copper") is an archaeological period which researchers usually regard as part of the broader Neolithic (although scholars originally defined it as a transition between the Neolithic and the Bronze Age). In the context of Eastern Europe, archaeologists often prefer the term "Eneolithic" to "Chalcolithic" or other alternatives. In the Chalcolithic period, copper predominated in metalworking technology. Hence it was the period before it was discovered that by adding tin to copper one could create bronze, a metal alloy harder and stronger than either component.