It was primarily "<span>d. the vulnerability to invaders from the north", since the Mongol territory was rapidly expanding--making the Mongol warriors all the more powerful. </span>
Answer:
The distribution of goods led directly to the development of cities. Just like in Europe cities developed around centers of trade. The trade led to the urbanization and development of big towns that were connecting different trade routes. The trade routes involved North Africa, Sahara, and Europe and it lasted for centuries. More urbanization led to even the first university being built in Timbuktu in Mali.
Feelings were nervous and frightening
