A.
The climate of the Middle East is very hot and dry, meaning fresh water is generally scarce.
The correct answer is the letter A
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On the one hand, railroad companies built tracks that attracted settlers and they advertised the rich farmland of the area throughout the country. Likewise, they sold parcels of land to farmers at very inexpensive prices. On the other hand, thanks to the railroad, farmers were able to ship their goods to the rest of the country more easily and reliably, faster and at a lower cost.