Assuming you mean America, the 1840s due to the potato famine.
They emigrated to the USA
Potato Famine
From about 1845 to 1852.
the Irish immigrated because of the great potato famine
At the time of The Great Famine they immigrated to America and Australia. Nowaday they immigrate to where-ever they want to. There isn't a specific place for them to immigrate to.
they immigrated to the US and Canada
Ireland
Something called the POTATO FAMINE!
Irish immigrants in the USA went to seek work and escape famine in Ireland in the 1800s Ireland its people and politics have never ever colonized another country
The Irish immigrated because they were in poverty and they barely had any food. They went to U.S.A or Canada.
The potato drought of 1845
They immigrated after WW2. They also immigrated around 1840-50 at the time of the Irish famine.