This document discusses the rise of American imperialism in the late 19th century. It describes key events that established the US as a world power, such as expanding influence over Japan and Hawaii and building a modern navy. The document also covers the Spanish-American War of 1898 and how it led to US control over Cuba, the Philippines, and Puerto Rico, cementing America's role as a major Pacific power. 1898 is identified as a watershed year that marked a significant change with the US gaining overseas territories and colonies.