Explanation:
The 'Dust Bowl' of the 1930s in the United States was caused by severe drought and poor agricultural practices (over-plowing) that led to massive dust storms, particularly in the Great Plains.
Explanation:
The 'Little Ice Age' (roughly 1300-1850) was a period of cooling in the Northern Hemisphere, thought to be caused by decreased solar activity (sunspot minimums) and increased volcanic eruptions that reduced solar radiation.
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