Question: Who was the American political activist that was a supporter of women's suffrage movement and was also the wife of the author who wrote American Slavery As It Is: Testimony of a Thousand Witnesses?

<P0-S0> Adeline E. Knapp (March 14, 1860 – c. June 1909) was an American journalist, author, social activist, environmentalist and educator, who is today remembered largely for her tempestuous lesbian relationship with Charlotte Perkins Gilman. <P0-S1>  In her lifetime, Knapp was known as a fixture of the turn-of-the-century San Francisco Bay Area literary scene. <P0-S2>  An outspoken writer who often addressed controversial topics in her columns for the "San Francisco Call", Knapp wrote on a wide range of subjects from livestock to the Annexation of Hawaii. <P0-S3>  Though often drawn to progressive causes like child labor and conservation, Knapp also tended to espouse reactionary views, as evidenced by her anti-Chinese sentiments and criticisms of the women's suffrage movement. <P0-S4>  At a time when many American women were joining the movement to extend political and voting rights to women, Knapp spoke in state senate hearings in New York expressing doubts about the benefits of suffrage to women, and she allowed her speeches and letters on the topic to be used as propaganda by the anti-suffragism movement. <P0-S5>  Knapp was also the author of numerous short stories, as well as a novel set in the Arizona desert—works reflecting her outdoor enthusiast sensibilities, keen intellect, and interest in Western regionalism. <P0-S6>  These works, though praised in her lifetime, today have few readers among enthusiasts of Western fiction. <SEP> <P1-S0> The People's Suffrage Federation was a British Adult Suffrage organisation. <P1-S1>  It was created by a merger of the Co-operative Women's Guild and the Women's Labour League in 1909. <P1-S2>  Led by Margaret Llewelyn Davies, who was the former Co-operative Women's Guild general secretary. <P1-S3>  The group believed that the Women's Suffrage movement was being damaged by class divisions, such as those which resulted in the split between the Women's Social and Political Union and the Women's Freedom League. <P1-S4>  They also thought that universal suffrage would be more popular with the liberal Government as it was likely that if only privileged women were granted voting rights, then this would likely aid the conservative vote in future elections. <SEP> <P2-S0> American Slavery As It Is: Testimony of a Thousand Witnesses is a book written by the American abolitionist Theodore Dwight Weld, his wife Angelina Grimké and her sister Sarah Grimké, which was published in 1839. <SEP> <P3-S0> Angelina Emily Grimké Weld (February 20, 1805 – October 26, 1879) was an American political activist, women's rights advocate, supporter of the women's suffrage movement, and besides her sister, Sarah Moore Grimké, the only known white Southern woman to be a part of the abolition movement. <P3-S1>  While she was raised a Southerner, she spent her entire adult life living in the North. <P3-S2>  The time of her greatest fame was between 1836, when a letter she sent to William Lloyd Garrison was published in his anti-slavery newspaper, "The Liberator", and May 1838, when she gave a speech to abolitionists gathered in Philadelphia, with a hostile crowd throwing stones and shouting outside the hall. <P3-S3>  The essays and speeches she produced in that two-year period were incisive arguments to end slavery and to advance women's rights.