Rosa Luxemburg ( LUK-səm-burg; Polish: Róża Luksemburg [ˈruʐa ˈluksɛmburk] ; German: [ˈʁoːza ˈlʊksm̩bʊʁk] ; born Rozalia Luksenburg; 5 March 1871 – 15 January 1919) was a Polish and naturalised-German...