Short answers, pulled from the story.
Rosa Luxemburg was born on the 5th of March 1871 in Zamość, a town under Russian rule. Her family spoke Polish and German at home while navigating a secular Jewish identity that rejected specific political causes tied to her heritage.
In autumn 1890 she met Leo Jogiches who became both her lover and her most dominant political partner. Their fifteen-year relationship functioned as a marriage despite his insistence on absolute secrecy about their personal lives.
Luxemburg responded immediately with her pamphlet Social Reform or Revolution? which appeared in late 1898 and early 1899. She argued that abandoning revolutionary goals would transform socialism into a mere petit-bourgeois reformist party.
She was arrested on the 4th of March 1906 spending four months in various prisons including the notorious Pavilion X of the Warsaw Citadel after traveling to Warsaw under the name Anna Matschke to join the revolutionary turmoil.
Rosa Luxemburg was arrested on the evening of the 15th of January 1919 before being shot in the head and thrown into the Landwehr Canal weighted with stones by soldiers from Freikorps paramilitary units.