Genius, the USSR was a preindustrial society before the 40s, there were quite literally no tractors on the fields, and the former Russian Empire that they had just barely left behind had 10 famines a century. Before the advent of industrialization of agriculture, pesticides, fertilizers and tractors, humans would go through easily 3 famines throughout their lives, more so in hard to farm areas like the fucking cold Russia. You quite literally can't eliminate famine until you industrialize, but once they did, they eliminated hunger everywhere they had influence... while imperial England kept murdering Indians of hunger by the millions by not industrializing their country (like Soviets did in Central Asia)