And you don't have to look to a history book to understand subsistence agriculture! A billion+ people survive on subsistence ag TODAY. They and their families have to pass up education opportunities. They starve when crops fail. They are desperately poor.
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Every nation on Earth has an obligation to ensure people are not dependent on the food they are able (or not) to grow. Subsistence ag should largely be a relic of our past in the same hunting and gathering is. We must do better. To romanticize subsistence like this is to romanticize starvation.
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