Answer:
The development of agriculture led to increased trade as agricultural areas traded surplus crops for other goods. Government officials regulated trade and exchange rates—over time, government's role would expand with trade. Agriculture also led to an increase in cities; this also necessitated more governance.
Farming enables a more stable and reliable way of obtaining food. You can farm anywhere as long as you have fertile soil. You can feed more, with farming, whereas hunting and gathering can only feed a small few. Because you can only hunt so much.
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