Manifest Destiny and the Mexican-American War

CrashCourse

In this episode of Crash Course US History, John Green explores the complex and often controversial era of Westward Expansion in the mid-19th century. The video moves beyond the romanticized view of the Oregon Trail to examine the political and social realities of Manifest Destiny. It details how the United States acquired Texas and California, the demographic shifts that occurred, and the conflicts that arose with Mexico, Native Americans, and within the U.S. government itself.