To put it simply...to help improve the quality of life in developing countries. When farmers are paid a fair price for their goods, it enables them to re-invest back into the community to improve in areas of education and healthcare, it allows them to feed their families.
Supporting Fair Trade means that you are supporting more humane working conditions, the end of child labour and the teaching of sustainable farming practices.
I guess a better question might be, why wouldn't we purchase fair trade?
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