A, food surpluses.
Being nomadic means they would still be travelling.
Advanced hunting techniques only benefit the hunter, and who he shares with.
And monetary system deal with money.
Answer:
cities like Timbuktu and Gao into important cultural centers. He also brought architects from the Middle East and across Africa to design new buildings for his cities. Mansa Musa turned the kingdom of Mali into a sophisticated center of learning in the Islamic world.
Japan had instantly made enemies of all of Russia's allies. If your friend beat you up you wouldn't want to be his friend for a while and all of his friends may not like you after the fight.
