The Irish Famine forced a million Irish to flee to America, where they faced discrimination and hatred as unwanted immigrants. They sailed on coffin ships, destitute and desperate. However, the new immigrants and their offspring soon began changing America . The impact of men like Henry Ford, Billy the Kid, JFK, Eugene O'Neill and women like Mother Jones on the new country was profound. The new Irish fought Lincoln's war and helped defeat slavery, created the model for machine politics, the Catholic Church, police and fire departments labor unions, and leading literary figures like Nobel winner O'Neill impacted millions of lives. Author Niall O'Dowd takes a hidden part of American history and reveals just what the children of the Irish Famine achieved and how different America would look were it not for their exodus to the US during the famine.   Billy the Kid, JFK, Henry Ford and Mother Jones are among America's greatest icons. Whether the Model T car, which changed transportation and industry, to politicians, union organizers, or feminists who helped shape this country, none of them would have had such an impact if not for the Irish Famine of 1845-1852.