อภิธานศัพท์ประวัติศาสตร์โลกและภูมิศาสตร์

A famine in 1845 when the main crop of Ireland, potatoes, was destroyed by disease. Irish farmers grew other food items, such as wheat and oats, but Great Britain required them to export those items to them, leaving nothing for the Irish to live on. As a result, over 1 million Irish died of starvation or disease, while millions of others migrated to the United States.