History tells us that trading and barter had been with us even before 106 BC. The barter system brings the people together in order to exchange goods such as metals in exchange of silk or other forms of goods in exchange of the other. Local produce such as vegetables are easily traded in the market. Where as gold and metal are traded overseas by way of water travel.
Archaeologists have proof of trade in barter that traces back to 2300 to 1800 BC in Ireland. The gold lumula and two other gold discs is a proof that despite Ireland having their own mineral resources had been trading minerals with other nations. It is such an amazing discovery that tells us how Irish people were creating goods and other products from raw materials traded from outside the country.
Watch Evidence of Gold Trade
The findings tell the present that there was perhaps no sufficient knowledge in extracting gold in Ireland during those days even with evidence that gold is present and sufficiently abundant at that era. There was no real evidence that it was exploited to create artifacts compared to artifacts created from raw mineral imports at almost the same time. It was also more likely that gold was not really thought as valuable then until before the first gold coins were created and introduced.
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At present, barter and trade have developed to what we call now as department stores which traces back to early 1800s. With industrial revolution giving way to a accelerated economy, the middle class had bigger funds to spend. But before merchants grew to become department stores, most of them started as small stores and eventually expanding to become bigger and larger.