c. During the rule of the Umayyad caliphs
Answer:
Without a serious focus on green growth, falling water tables, rising food/water/energy prices, population growth, resource depletion, climate change, terrorism, and changing disease patterns, catastrophic results around the world are likely and will force migrations over the next few decades to make much of the world ...
Explanation:
<span>To guarantee the independence and territorial boundaries of the member countries
HOPE IT HELPS:)</span>
