Key term for OCR GCSE History B, used in Settlement and conflict on the Plains 1861–1877.
An environment with very low annual rainfall (10–20 inches), requiring specialized farming techniques to grow crops.
Semi-arid appears in OCR GCSE History B revision content for The Making of America (1789–1900), especially Settlement and conflict on the Plains 1861–1877 and Homesteaders.
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