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9800 BCE
Wisconsin Glacier
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8500 BCE
domestication of wheat
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7000 BCE
domestication of corn
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7000 BCE
domestication of soybeans
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crop rotation was invented
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Founding of Darke County
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First working combine
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creation of the Ohio Board of Agriculture
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Formation of the Darke County Agricultural Society
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Darke County Fair
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vermiculture (worm farms) were first used
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creation of Gardeners Thumb Worm Casting LLC