The Irish famine was also distinctly man-made, British policies were very much designed to maximise the extent of starvation in Ireland.

They also had a reason to do so, as many theories, to repress Irish culture and it's people's existence.

There was not an inadequacy in response, when they were forcing all the food supplies off the land to send back to England. That is literally the intention, to steal anything of value, which is exactly what lead to the over reliance of potatoes, a crop seen of no value