Commercial exchange was not affected by political conditions in the Maghreb, nor by the different systems of power, the only exception being banditry, a world wide phenomenon
Inter Maghreb trade was widespread in the Maghreb countries in the middle ages, and the traders often imported products which were inexistent in their town markets, they would sell necessities even to the inhabitants of different inland regions

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مقالات من مجلة العربي نُظم الأسواق في المدينة الإسلامية
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16
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التبادل التجاري بين مدن بلاد المغرب خلال القرن 4 هـ/10م
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