In 1540, Zamumo, the chief of the Altamahas in central Georgia, exchanged gifts with the Spanish conquistador Hernando de Soto. With these gifts began two centuries of exchanges that bound American Indians and the Spanish, English, and French who colonized the region. Whether they gave gifts for diplomacy or traded commodities for profit, Natives and newcomers alike used the exchange of goods such as cloth, deerskin, muskets, and sometimes people as a way of securing their influence. Gifts and trade enabled early colonies to survive and later colonies to prosper. Conversely, they upset the...