In the 1960s, a revisionist school of economic historians proved that limiting wheat exports would have made only a puny dent in the calamity.
Wheat exports would only be able to be limited slightly.
mnli hypothesis: Wheat exports would only be able to be limited slightly. premise: In the 1960s, a revisionist school of economic historians proved that limiting wheat exports would have made only a puny dent in the calamity.