Complex sentence: Women like Sivagami Ammaiyar who were widowed at 11 years were given a new lease of life by the widow remarriage principles of the self-respect movement and so the self-respect movement attracted a lot of women.
Split into simpler sentences: Women like Sivagami Ammaiyar, who could be widowed at 11 years, were given a new lease on life by the widow remarriage principles of the self-respect movement. Consequently, the self-respect movement attracted a lot of women.