Answer:
People living in the Fertile Crescent were able to grow more crops than they could eat and raise more animals than they needed, so they could trade the excess crops and animals with others. As trading increased, the population grew, and the people needed to develop laws, keep records, and invent ways to deal with their new way of life.
Explanation:
Yathrib's residents had asked Muhammad to move to the city in order to bring strong leadership and peace. They sought Muhammad's counsel in brokering a peace between the warring tribed of Aws and Khazraj.
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