Why were people in arabia know as the middlemen of trade

They served as a link between various regions helping them be exposed to new and different goods and ideas. They also helped other acknowledge differently and taught people new things

The Incense trade route served as a channel for the trading of goods such as Arabian frankincense and myrrh; from Southeast Asia Indian spices, precious stones, pearls, ebony, silk and fine textiles; and from the Horn of Africa, rare woods, feathers, animal skins, Somali frankincense, and gold.