The Great Famine was caused by British capitalists who, before and during the crisis, prioritized profits over the Irish people’s welfare. British landowners forced Irish farmers to rely on the potato, making them vulnerable to disease. High rents, taxes, and lack of investment left Irish farmers impoverished. During the famine, British merchants continued exporting food from Ireland to England, and the British government’s inadequate aid policies worsened the situation. This exploitation and neglect led to the deaths and emigration of millions of Irish people.
There wouldn’t have been a famine if the population wasn’t forced to be reliant on a single crop. It would have just been a regular run of the mill crop plague.