Between 1845 And 1850, Many People Emigrated From Ireland To The United States. What Prompted Them To Leave Their Home Country? Ireland Was Engaged In A Fierce War With Britain. Ireland Was Becoming Severely Overpopulated. A Viral Epidemic Was Killing Many Irish People. A Crop Failure Had Led To A Famine In Ireland.. However, most of the irish came to america in the. Millions emigrated from ireland, fleeing not only.

The effects of the irish potato famine continued to spur on irish immigration well into the 20th century. Millions emigrated from ireland, fleeing not only. By the 1830s, 150,000 immigrants, mostly from northern ireland and england, had found their way to the united states.