Another cause of tension was that the Soviet Union was trying to spread communism. The U.S. was against communism and they took leadership of containment policy. The Containment policy was the U.S. approach to trying to prevent communism spreading.
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Explanation:
Corn made substantial gains on cotton acreage during the Civil War. ... Improved strains, more scientific cultivation and fertilization, and expansion of irrigation increased yields of corn in Texas from 10 to 25 bushels an acre during the nineteenth and early twentieth centuries to 90 to 120 bushels in 1975–80.