In the 1840s, why did so many Irish people move to the United States?

They were suffering religious persecution in Ireland.
There was a war going on at that time in Ireland.
Ireland’s potato crop failed due to a disease.
Ireland was very overpopulated at that time.

Respuesta :

The correct answer is "Ireland's potato crop failed due to a disease"

Hope that helped
The answer is C, the third answer. This event was known as the Irish Potato Famine. At the time, potatoes were the main source of food. When they began being affected by a disease, the potatoes were depleted. As such, Ireland went into a famine and many moved to the US.