The Tongmenghui, or the United League, was a revolutionary organization founded in 1905 in response to the failings of the Qing Dynasty and the impact of foreign imperialism. This group played a crucial role in the push for national reform and the eventual overthrow of the Qing government, advocating for the establishment of a republic based on democratic ideals. Their activities and ideologies significantly influenced political movements in China, especially leading up to the 1911 Revolution.