"In 1911, 146 workers, most of them young women, were killed in the Triangle Shirtwaist Fire leading to a public call for laws to protect workers. As a result, by 1920 the ILGWU [International Ladies Garment Workers Union] was one of the most powerful unions in the organized labor movement."--Excerpt from Eleanor Roosevelt National Historic Site
Please watch this interesting video by Dale Caruso for more information