The UK forced Ireland to export its grain during the Irish potato famine.
https://www.washingtonpost.com/archive/opinions/1997/09/27/the-irish-famine-complicity-in-murder/5a155118-3620-4145-951e-0dc46933b84a/
It was not the only planned famine conducted by the UK.
Famine and forced migration for an indentured labor supply to tea plantations in Assam was just one.
https://en.m.wikipedia.org/wiki/Great_Famine_of_1876%E2%80%931878
https://en.m.wikipedia.org/wiki/Famine_in_India
Stalin learned how planned famines can be utilized.
https://en.m.wikipedia.org/wiki/Holodomor
So did the Chinese
https://en.m.wikipedia.org/wiki/Great_Chinese_Famine
https://en.m.wikipedia.org/wiki/Second_Sino-Japanese_War