Which of the following are true about the medieval islamic trade networks? select all that apply.

a. the abbasids expanded into new territories both north-south and east-west.
b. established trade networks provided the backbone of trade and enabled further expansion into new areas.
c. islamic trade routes were more often used for the enforcement of islamic faith throughout the region than trade.
d. the regions saw in increase in economic stability and prosperity due to the trade networks.
e. as new goods flowed into the abbasid empire, the economic prosperity of the local inhabitants increased.