the answer A is i do believe
It promoted bringing more people together as one nation
B. <span>It was weak militarily, but it was a Golden Age for the economy and the arts.
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One of the most important was climate changes. As climate changed, nomads had to find new places to migrate to which led to people going to areas that were uninhabited before. Another was the development of agriculture which more or less ended the nomadic way of life when people started settling.
