Answer :
Final answer:
The Irish Potato Famine of 1845-1845 was caused by potatoes infected with a new virus called potato blight. This led to mass starvation, emigration, and a dramatic decrease in Ireland's population.
Explanation:
The cause of the Irish Potato Famine of 1845-1845 was the potatoes infected with a new virus called potato blight. The blight destroyed much of the potato crop in Ireland, which was a staple food for the Irish people. As a result, mass starvation and emigration occurred, leading to a dramatic decrease in Ireland's population.