AbstractDaniel Laqua's Activism across Borders since 1870 is an impressive contribution to scholarly research on transnational activism. It provides a detailed and innovative study of the connections but also the divisions between individuals, groups, and organizations. Laqua's approach and analysis interrogate the connectedness, transience, ambivalence, and marginality of transnational activism. He explores the complex relationship of campaigners, campaigns, and causes that crossed national boundaries, building a rich analysis of these interactions.This contribution engages with Activism across Borders with a particular emphasis on women, workers, and women workers. This perspective offers an analysis at the intersection of women's history and labour history. Among the themes considered are: campaigns that forged partnerships and amplified voices; women's transnational activism and national borders; and the divisions and differences among activists campaigning to improve working conditions.