*Includes pictures *Includes excerpts of contemporary accounts *Includes a bibliography for further reading The Lewis and Clark Expedition, notwithstanding its merits as a feat of exploration, was also the first tentative claim on the vast interior and the western seaboard of North America by the United States. It set in motion the great movement west that began almost immediately with the first commercial overland expedition funded by John Jacob Astor's Pacific Fur Company and would continue with the establishment of the Oregon Trail and California Trail. The westward movement of Americans in the 19th century was one of the largest and most consequential migrations in history, and as it so happened, the paths were being formalized and coming into use right around the time gold was discovered in the lands that became California in January 1848. Located thousands of miles away from the country's power centers on the East Coast at the time, the announcement came a month before the Mexican-American War had ended, and among the very few Americans that were near the region at the time, many of them were Army soldiers who were participating in the war and garrisoned there. San Francisco was still best known for being a Spanish military and missionary outpost during the colonial era, and only a few hundred called it home. Mexico's independence, and its possession of those lands, had come only a generation earlier. The most well-known is the Oregon Trail, which was not a single trail but a network of paths that began at one of four "jumping off" points. The eastern section of the Oregon Trail, which followed the Missouri River through Kansas, Nebraska, and Wyoming, was shared by people traveling along the California, Bozeman, and Mormon Trails. These trails branched off at various points, and the California Trail diverged from the Oregon Trail at Fort Hall in southern Idaho. From there, the Oregon Trail moved northward, along the Snake River, then through the Blue Mountains to Fort Walla Walla. From there, travelers would cross the prairie before reaching the Methodist mission at The Dalles, which roughly marked the end of the trail. As it so happened, many of the paths were being formalized and coming into use right around the time gold was discovered in the lands that became California in January 1848. Located thousands of miles away from the country's power centers on the East Coast at the time, the announcement came a month before the Mexican-American War had ended, and among the very few Americans that were near the region at the time, many of them were Army soldiers who were participating in the war and garrisoned there. San Francisco was still best known for being a Spanish military and missionary outpost during the colonial era, and only a few hundred called it home. Mexico's independence, and its possession of those lands, had come only a generation earlier. The announcement of gold brought an influx of an estimated 90,000 "Forty-Niners" to the region in 1849, hailing from other parts of America and even as far away as Asia. All told, an estimated 300,000 people would come to California over the next few years, as men dangerously trekked thousands of miles in hopes of making a fortune, and in a span of months, San Francisco's population exploded, making it one of the first mining boomtowns to truly spring up in the West. This was a pattern that would repeat itself across the West anytime a mineral discovery was made, from the Southwest and Tombstone to the Dakotas and Deadwood. While many would look back romantically at the various trails over time, 19th century Americans were all too happy and eager for the Transcontinental Railroad to help speed their passage west and render overland paths obsolete. This book examines how the paths were forged, the people most responsible for them, and the most famous events associated with the trails' history.