And fortunately, there's actually an easy answer, because the Arab lawyer and traveler Ibn Battuta traveled down the east coast of Africa in the 14th century, and what he found when he got to Mogadishu was a market, and he wrote about it.
و خوشبختانه، پاسخ ساده‌ای دارد، چرا که حقوقدان و جهانگرد عرب، ابن بتوته، در قرن ۱۴ به ساحل شرقی آفریقا سفر کرد، و در شهر موگادیشو به بازاری رسید، و درباره آن نوشت.