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When gold was discovered at Sutter's Mill on the American River, it completely transformed the territory of California. Hundreds of thousands of people sped to California by any means possible, and small cities sprung up to service their needs as they sought the precious metal. By 1850, California had become a state; it had also become a symbol of where the nation was going.

When gold was first discovered on the American River above Sutter's Fort in January 1848, California was sparsely populated frontier territory not yet ceded to the United States from Mexixo. The discovery triggered a massive influx as hundreds of thousands of people scrambled to California in search of riches, braving dangerous journeys across the Pacific, around Cape Horn, and through the Isthmus of Panama, as well as across America's vast, unsettled wilderness. Cities sprang up overnight, in response to the demand for supplies and services of all kinds.

In 1803, President Thomas Jefferson selected his personal secretary, Captain Meriwether Lewis, to lead a voyage up the Missouri River, across the forbidding Rockies, and - by way of the Snake and the Columbia rivers - down to the Pacific Ocean. Lewis and his partner, Captain William Clark, endured incredible hardships and witnessed astounding sights. With great perseverance, they worked their way into an unexplored West. When they returned two years later, they had long since been given up for dead.

Adventure, politics, suspense, drama, diplomacy, romance, and personal tragedy combine to make this outstanding work of scholarship about Captain Meriwether Lewis, hand-picked by President Thomas Jefferson to explore and acquire the American West. Browse more Ambrose, including his latest, Nothing Like It in the World.

Here is the story of the infamous 1910 race to the South Pole, as told by its fearless yet desperate leader, Robert Falcon Scott. The New York Times called Scott's Last Expedition "A splendid record of heroism not soon to be forgotten."

You'll be awe-inspired by the heroic efforts of the crew of the Endurance, a ship that battled its way for six weeks through thousands of miles of pack ice while ironically only a day's sail from its destination.