USA HISTORY

Detailed explanation-1: -Without genetic diversity, humans risk drought, famine, disease and lack natural barriers to extreme weather conditions. A historic example of the impact of biodiversity loss on humans is the Great Famine in Ireland from 1845-1852 (dates range).

Detailed explanation-2: -It is estimated that the Famine caused about 1 million deaths between 1845 and 1851 either from starvation or hunger-related disease. A further 1 million Irish people emigrated. This meant that Ireland lost a quarter of its population during those terrible years.

Detailed explanation-3: -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-4: -The 410, 000 documented arrivals from Ireland in the database represent about one-third to one-quarter of the up to 1.5 million Irish who arrived in the United States during the broader Famine period of 1845–1855, including some who walked into the country after landing in Canada.