USA HISTORY

Detailed explanation-1: -It included among its members such notables as Andrew Carnegie, Mark Twain, William James, David Starr Jordan, and Samuel Gompers with George S. Boutwell, former secretary of the Treasury and Massachusetts, as its president.

Detailed explanation-2: -The league argued against militarization and the creation of an overseas American Empire and asserted that the principles the United States had been founded upon needed to extend to foreign policy as well.

Detailed explanation-3: -As a self-conscious political movement, anti-imperialism originated in Europe in the late 19th and early 20th centuries in opposition to the growing European colonial empires and the United States control of the Philippines after 1898.

Detailed explanation-4: -Anti-imperialism and anti-colonialism denote opposition to empire. Whereas the latter has been mostly understood as opposition to formal colonial rule in a narrow sense, the former has come to be defined ever more expansively.