Luxemburg completed her key work on the mass strike by July 1, 1906.
By July 1, 1906, while imprisoned, Rosa Luxemburg completed parts of 'The Mass Strike, the Political Party and the Trade Unions.' This work formulated her influential mass strike theory, drawing from her experiences during the 1905 Russian Revolution. The essay argued for a unified revolutionary strategy linking economic and political efforts, crucial for the proletarian struggle and influential in shaping socialist tactics across Europe. Her ability to create such impactful work from prison underscores her intellectual resilience and dedication.