Final answer:
The Anti-Imperialist League, formed in June 1898, was a group of Americans who opposed U.S. imperialism and annexation of the Philippines. They believed it went against the ideals of the Declaration of Independence. The league included influential figures like Jane Addams, Mark Twain, Samuel Gompers, and Andrew Carnegie.
Step-by-step explanation:
The subject of this question is History. The Anti-Imperialist League, which was formed in June 1898, was a group of Americans who opposed U.S. imperialism and the U.S. annexation of the Philippines. They argued that denying the Philippines independence would go against the ideals expressed in the Declaration of Independence. Prominent figures such as Jane Addams, Mark Twain, Samuel Gompers, and Andrew Carnegie were part of this league.