Holocene climatic optimum was the warm period about 7,000 years ago in the Mid-Holocene that had grasslands in the Sahara and severe droughts in the Great Plains.
It should be noted that climate simply means the weather condition in a particular area for a period for time.
In this case, Holocene climatic optimum was the warm period about 7,000 years ago in the Mid-Holocene that had grasslands in the Sahara and severe droughts in the Great Plains.
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