Hunger.
they emigrated to America
During the famine in Ireland, roughly 1.5 million people emigrated
Potato Famine in Ireland between 1845 and 1849. About two-fifths of the population was solely reliant on this cheap crop for a number of historical reasons. During the famine, about one million people died and a million more emigrated from Ireland, causing the island's population to fall by between 20% and 25%.
Irish people had emigrated from Ireland long before the Famine but from 1845 they emigrated principally to Great Britain, USA, Canada , Australia and in lesser numbers to New Zealand and Argentina
Yes.
People emigrate from Ireland for all sorts of reasons. Basically, like anyone that emigrates from any country, they want to get a better life. Nowadays people emigrate in search of work, because they may have problems getting employment. In the past they have emigrated for other reasons, such as the famine in the 1840s.
They are not sure how many people had moved to America because of the Famine but they know that it had caused more than two-thirds of the population to move there. Some of them came back after the Famine.
The Famine
Ireland did not have its own government during the famine. It was still under British rule at that time.
The potato crop was destroyed. This resulted in many people starving and dying. Others left Ireland and emigrated to many parts of the world.
During Ireland's potato famine because potatoes are a HUGE crop of Ireland
About one million people died with another one million emigrating.