
Trade began in our first civilizations, like the Indus. Ancient Indus valley communities had the first known systems of trade and measure, seals (credit cards) and are within a days walk of each other, so traders could travel from town to town.
Geographic Photography
TIP: Use this to find a stock photo in the OlsonFarlow stock archives. Enter a name, region, country, activity or keyword phrase, For example: "Alligator, Okenfenokee Swamp"