Irish Potato Famine

Irish Potato Famine

(1845–49) Famine that occurred in Ireland when the potato crop failed in successive years. By the early 1840s almost half the Irish population, particularly the rural poor, was depending almost entirely on the potato for nourishment. Reliance on only one or two high-yielding varieties made the crop vulnerable to disease, including late blight, caused by the water mold Phytophthora infestans, which ruined the crop. The British government provided minimal relief to the starving Irish, limited to loans and soup kitchens. The famine was a watershed in Ireland's demographic history: about one million people died from starvation or famine-related diseases, and perhaps as many as two million emigrated. Population continued to decline thereafter, and by independence in 1921 the Irish population was barely half of the 8.4 million it had been before the famine.

This entry comes from Encyclopædia Britannica Concise.
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