Original: Silent bartering was mainly used during 500 to 1500 A.D. Procedure To perform a silent barter, one group of traders would go to a specific location, leave their trading goods and then withdraw to a distance.
Simplified: Silent bartering was mainly used during 500 A.D to 1500 A.D. To do a silent barter, one group of traders would go to a certain location, leaving whatever they are offering to trade.