Who is the leader most closely associated with the anti-imperialist viewpoint in the excerpt?

William Jennings Bryan is the leader most closely associated with the anti-imperialist viewpoint due to his vocal opposition to American expansionism, particularly during the late 19th and early 20th centuries. Bryan believed that imperialism contradicted the fundamental values of democracy and self-determination that the United States was founded upon. He argued that acquiring territories through military means undermined American principles and that all nations should have the right to govern themselves without foreign interference.

Bryan's opposition was particularly notable during debates over the annexation of the Philippines following the Spanish-American War. He used his platform to advocate for the rights of the Filipino people and criticize the imperial ambitions of the United States, making him a prominent figure in the anti-imperialist movement. In contrast, Theodore Roosevelt embraced a robust foreign policy, Woodrow Wilson focused on promoting democratic ideals abroad through intervention, and Mark Twain, while involved in anti-imperialist sentiment, played a less prominent role in political leadership compared to Bryan.