The practice was certainly well established between tribes in Africa in their trade with India. Cosmas Indicopleustes describes this practiced in Azania, where officials from Axum bartered for gold with beef 1. Prince Henry the Navigator of Portugal recorded this practice when he occupied Ceuta in 1415.
Also in West Africa, gold mined south of the Sahel was traded, pound for pound, for salt mined in the desert. The salt from the desert was needed by the people of Sahel to flavor and preserve their food and the gold had obvious value, especially in trading with the European people. Because of this trade, cities grew and flourished and parts of West Africa became commercial centers. West Africa produced large amounts of gold until about 1500 AD. The communication in this gold-for-salt was carried out using drums.
Researchers from University of Groningen report details of new studies and findings in the area of life sciences.
Aug 05, 2008; According to a study from Netherlands, "New institutional Economics (NIE) claims that Silent Trade exists." "Indeed, it would...