It's said when potato arrived in Europe from South America, food security increased a lot, because it made much harder to use starvation as a weapon of war. It

It's said when potato arrived in Europe from South America, food security increased a lot, because it made much harder to use starvation as a weapon of war. It was much more difficult for soldiers to uproot potato plants one by one, as compared to just set a wheat field on fire. Unfortunately in modern era even potatoes are no match for bulldozers.