The discovery of iron helped the West Africans a lot.  First of all, if it was heated, it would become softer.  This allowed them to form the iron into different tools. These tools were very important because they helped farmers tremendously. The tools that they were able to make also helped farmers grow more crops quicker.  It also developed many more farms, which meant a larger population.  Also, the population survived longer because they had more food.  All in all, iron helped them develop more farms.
     With iron being dicovered, Africans were also considered "richer".  This was because the iron was only found in West Africa, so more people wanted it.  These reasons were the cause of the West Africans becoming very valuable in trade.  Since they were the only region that had found iron, they were the only peolple that traded it, at first.  Also, they used it in trade, in order to get the supplies that they needed.  The effect was them growing larger because the iron helped get more supplies that they used to survive.



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