Answer :
Final answer:
The Incas achieved terrace farming as a way to sustain their empire and support their population.
Explanation:
The phrase that best completes the partial outline is (2) Created a system of terrace farming.
The Inca civilization developed an innovative agricultural system known as terrace farming. They transformed steep slopes into terraced fields by constructing stone walls. The terraces allowed them to grow crops such as maize, potatoes, quinoa, and beans at high altitudes, improving food production in their mountainous environment.
This achievement is significant because it enabled the Inca to sustain their empire and support a large population in areas with limited arable land.
Final answer:
The phrase that completes the partial outline is 'Created a system of terrace farming'.
Explanation:
The phrase that best completes the partial outline is (2) Created a system of terrace farming.
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