Final answer:
Terraced farming is essential on mountainous or uneven terrain to establish flat areas for cultivation.
Explanation:
Terraced farming is necessary on mountainous or uneven terrain to create flat areas for cultivation. Farmers in regions like China and the Inca of Mesoamerica used terrace farming to grow food for their populations by carving steps into steep slopes, creating terraces that help reduce erosion, promote soil formation, and provide flat land for agriculture.
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