Keywords: Irland ; Schweden ; Europa ; Auswanderung ; USA ; Geschichte 1815-1914 ; Ireland--Emigration and immigration--History--19th century. ; Ireland--Emigration and immigration--History--20th century. ; Sweden--Emigration and immigration--History--19th century. ; Sweden--Emigration and immigration--History--20th century. ; United States--Emigration and immigration--History--19th century. ; United States--Emigration and immigration--History--20th century. ; Europe--Emigration and immigration--History--19th century. ; Europe--Emigration and immigration--History--20th century. ; Ireland ; Emigration and immigration ; History ; 19th century ; Ireland ; Emigration and immigration ; History ; 20th century ; Sweden ; Emigration and immigration ; History ; 19th century ; Sweden ; Emigration and immigration ; History ; 20th century ; United States ; Emigration and immigration ; History ; 19th century ; United States ; Emigration and immigration ; History ; 20th century ; Europe ; Emigration and immigration ; History ; 19th century ; Europe ; Emigration and immigration ; History ; 20th century ; Irland ; Schweden ; Auswanderung ; USA ; Geschichte 1815-1914 ; Europa ; Auswanderung ; USA ; Geschichte 1815-1914