Complex sentence: Formed on 6 November 1867, by Lydia Becker, the organisation helped lay the foundations of the women's suffrage movement, furthered later by the National Union of Women's Suffrage Societies and the Women's Social and Political Union.
Split into simpler sentences: Formed on 6 November 1867, by Lydia Becker, the organisation helped lay the foundations of the women's suffrage movement. The national society was furthered later by the National Union of Women's Suffrage Societies and the Women's Social and Political Union.