Respuesta :

 The anti-imperialists opposed expansion, believing that imperialism violated the fundamental principle that just republican government must derive from "consent of the governed."

Answer:

B) annexation of the Philippines

Explanation:

The Anti-Imperialist League opposed the annexation of the Philippines on the basis that it violated the American fundamental ideal of self-government. Other groups opposed annexation of the Philippines based on concerns of an influx of immigrants to the United States. The annexation Philippines was passed on February 6, 1899.