Take the example of Cuba. When the Soviet Union's support went away, the Cubans began gardening every square inch of urban land including flower pots and the medians of roads. The most interesting phenomenon is that much of the rural agricultural land was abandoned at the same time. When it came right down to having beans in the pot at dinner time, attention and limited fertilizer (compost) was deemed better spent on the vegetable plot beside the apartment building and the tub on the roof rather than the sugar cane field fifty miles away. "Farms" became two or three acres near the cities. But most food came from personal allotments, gardens (Sp. 'huerto') See for example:
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