The document outlines different periods of US imperial diplomacy: 1) Roosevelt's "Big Stick" diplomacy in the early 1900s which included the Roosevelt Corollary and interactions with Japan, 2) Taft's "Dollar Diplomacy" in the late 1900s/early 1910s which focused on economic interests in places like the Philippines and China, and 3) Wilson's "Moral Diplomacy" in the early 1910s which promoted anti-imperialism but still involved interventions in Mexico and World War I. Each section lists various policies and events that characterized the diplomatic approach of that time.