USA HISTORY

Detailed explanation-1: -Between 1845 and 1855 more than 1.5 million adults and children left Ireland to seek refuge in America. Most were desperately poor, and many were suffering from starvation and disease. They left because disease had devastated Ireland’s potato crops, leaving millions without food.

Detailed explanation-2: -The potato late blight pathogen was introduced to Europe in the 1840s and caused the devastating loss of a staple crop, resulting in the Irish potato famine and subsequent diaspora.

Detailed explanation-3: -The proximate cause of the famine was a potato blight that infected potato crops throughout Europe during the 1840s, causing an additional 100, 000 deaths outside Ireland and influencing much of the unrest in the widespread European Revolutions of 1848.

Detailed explanation-4: -The Irish Potato Famine, also known as the Great Hunger, began in 1845 when a mold known as Phytophthora infestans (or P. infestans) caused a destructive plant disease that spread rapidly throughout Ireland.

Detailed explanation-5: -The number of Irish who emigrated during the famine may have reached two million. Between 1841 and 1850, 49 percent of the total emigrants to the United States were Irish.