Final answer:
The push factor that brought Irish immigrants to the United States was famine and mass starvation in Ireland.
Step-by-step explanation:
The push factor that brought Irish immigrants to the United States was famine and mass starvation in Ireland. Ireland experienced a devastating famine known as the Great Famine or the Irish Potato Famine from 1845 to 1852. The failure of the potato crop, which was a staple food for the majority of the Irish population, led to widespread starvation and forced many Irish people to seek refuge in the United States and other countries.
Learn more about Irish immigration to the United States