Why was the loss of potatoes so significant to the people of Ireland if they had corn to eat?

This is because potatoes in Ireland were there prize plant because they made them money and you could make many different types of meals with potatoes.

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a.) a poor farmer, due to the fact that they would want to be freed from british rule.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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