Complex sentence: Clementina Black (27 July 1853--19 December 1922) was an English writer, feminist and pioneering trade unionist, closely connected with Marxist and Fabian socialists, and for women's rights at work and women's suffrage.
Split into simpler sentences: Clementina Black (27 July 1853--19 December 1922) was an English writer, feminist and pioneering trade unionist, closely connected with Marxist and Fabian socialists. She worked consistently for women's rights at work and for women's suffrage.