It wasn't until 2012 that Feely and a team from Oregon State University finally showed with certainty that acidification had caused the problem.
The answer is C- Both were on a quest for world dominance, starting with Central Asia.
Answer:
They traded with one another.
Explanation:
Arabian nomads dominated agriculture and animal husbandry well. This allowed a strong trade between them and the Arabs of the medieval Arab city, who offered, in exchange for agricultural products, other products such as fabrics, gold, jewelry and other things.
These two groups managed to establish a type of trade between them, where both were favored in some way and contributed to the survival of the two populations.
