The document discusses the rise of American imperialism in the late 19th and early 20th centuries. It was driven by a sense of Anglo-Saxon racial superiority, the need for new markets as industrialization increased productivity and exports, and strategic military and commercial interests. Key events included the acquisition of Alaska, Hawaii, Puerto Rico, Guam, and the Philippines through war, negotiation, or insurrection. The building of the Panama Canal further cemented America's role as a global power projecting influence across the Pacific.